856902380 has 24 divisors (see below), whose sum is σ = 1828997520. Its totient is φ = 337141440.

The previous prime is 856902379. The next prime is 856902433. The reversal of 856902380 is 83209658.

856902380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349970 + ... + 352409.

It is an arithmetic number, because the mean of its divisors is an integer number (76208230).

Almost surely, 2^856902380 is an apocalyptic number.

It is an amenable number.

856902380 is an abundant number, since it is smaller than the sum of its proper divisors (972095140).

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

856902380 is a wasteful number, since it uses less digits than its factorization.

856902380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702449 (or 702447 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 856902380 is about 29272.8949712870. The cubic root of 856902380 is about 949.8254083586.

The spelling of 856902380 in words is "eight hundred fifty-six million, nine hundred two thousand, three hundred eighty".