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828030 = 23573943
BaseRepresentation
bin11001010001001111110
31120001211210
43022021332
5202444110
625425250
710016040
oct3121176
91501753
10828030
11516125
1233b226
1322cb78
14177a90
15115520
hexca27e

828030 has 32 divisors (see below), whose sum is σ = 2271744. Its totient is φ = 189216.

The previous prime is 828029. The next prime is 828043. The reversal of 828030 is 30828.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 827988 and 828006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1762 + ... + 2181.

It is an arithmetic number, because the mean of its divisors is an integer number (70992).

2828030 is an apocalyptic number.

828030 is an abundant number, since it is smaller than the sum of its proper divisors (1443714).

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

828030 is a wasteful number, since it uses less digits than its factorization.

828030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 828030 is about 909.9615376487. The cubic root of 828030 is about 93.9035528035.

Adding to 828030 its reverse (30828), we get a palindrome (858858).

The spelling of 828030 in words is "eight hundred twenty-eight thousand, thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 3943 7886 11829 19715 23658 27601 39430 55202 59145 82803 118290 138005 165606 276010 414015 828030