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828067680 = 253251161857
BaseRepresentation
bin110001010110110…
…100111101100000
32010201011012022100
4301112310331200
53143441131210
6214100210400
726343313326
oct6126647540
92121135270
10828067680
11395471560
121b1399a00
1310272c49b
147bd93d16
154ca6d5c0
hex315b4f60

828067680 has 288 divisors, whose sum is σ = 3136861728. Its totient is φ = 197222400.

The previous prime is 828067661. The next prime is 828067697. The reversal of 828067680 is 86760828.

828067680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 965812 + ... + 966668.

It is an arithmetic number, because the mean of its divisors is an integer number (10891881).

Almost surely, 2828067680 is an apocalyptic number.

828067680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 828067680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568430864).

828067680 is an abundant number, since it is smaller than the sum of its proper divisors (2308794048).

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

828067680 is a wasteful number, since it uses less digits than its factorization.

828067680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 828067680 is about 28776.1651371408. The cubic root of 828067680 is about 939.0497716101.

The spelling of 828067680 in words is "eight hundred twenty-eight million, sixty-seven thousand, six hundred eighty".