8402856 has 64 divisors (see below), whose sum is σ = 26196480. Its totient is φ = 2182080.

The previous prime is 8402833. The next prime is 8402857. The reversal of 8402856 is 6582048.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (8402857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426 + ... + 4121.

It is an arithmetic number, because the mean of its divisors is an integer number (409320).

Almost surely, 2^8402856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8402856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13098240).

8402856 is an abundant number, since it is smaller than the sum of its proper divisors (17793624).

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

8402856 is a wasteful number, since it uses less digits than its factorization.

8402856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4574 (or 4570 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 8402856 is about 2898.7680141743. The cubic root of 8402856 is about 203.3023070699.

The spelling of 8402856 in words is "eight million, four hundred two thousand, eight hundred fifty-six".