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828828 = 22327111323
BaseRepresentation
bin11001010010110011100
31120002221100
43022112130
5203010303
625433100
710021260
oct3122634
91502840
10828828
11516790
1233b790
13230340
141780a0
151158a3
hexca59c

828828 has 144 divisors (see below), whose sum is σ = 2935296. Its totient is φ = 190080.

The previous prime is 828823. The next prime is 828829.

828828 = 373 + 383 + ... + 473.

828828 is nontrivially palindromic in base 10.

828828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

828828 is a nontrivial binomial coefficient, being equal to C(1288, 2).

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (16384) is a multiple of the sum of its prime factors (64).

It is a junction number, because it is equal to n+sod(n) for n = 828792 and 828801.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 828828.

It is not an unprimeable number, because it can be changed into a prime (828823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36025 + ... + 36047.

It is an arithmetic number, because the mean of its divisors is an integer number (20384).

2828828 is an apocalyptic number.

828828 is the 1287-th triangular number and also the 644-th hexagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 828828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467648).

828828 is an abundant number, since it is smaller than the sum of its proper divisors (2106468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

828828 is a wasteful number, since it uses less digits than its factorization.

828828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 59 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 828828 is about 910.3999121265. The cubic root of 828828 is about 93.9337091085.

The spelling of 828828 in words is "eight hundred twenty-eight thousand, eight hundred twenty-eight".

Divisors: 1 2 3 4 6 7 9 11 12 13 14 18 21 22 23 26 28 33 36 39 42 44 46 52 63 66 69 77 78 84 91 92 99 117 126 132 138 143 154 156 161 182 198 207 231 234 252 253 273 276 286 299 308 322 364 396 414 429 462 468 483 506 546 572 598 644 693 759 819 828 858 897 924 966 1001 1012 1092 1196 1287 1386 1449 1518 1638 1716 1771 1794 1932 2002 2093 2277 2574 2691 2772 2898 3003 3036 3276 3289 3542 3588 4004 4186 4554 5148 5313 5382 5796 6006 6279 6578 7084 8372 9009 9108 9867 10626 10764 12012 12558 13156 15939 18018 18837 19734 21252 23023 25116 29601 31878 36036 37674 39468 46046 59202 63756 69069 75348 92092 118404 138138 207207 276276 414414 828828