856338402 has 16 divisors (see below), whose sum is σ = 1749117312. Its totient is φ = 279372720.

The previous prime is 856338299. The next prime is 856338403. The reversal of 856338402 is 204833658.

It is not an unprimeable number, because it can be changed into a prime (856338403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1518049 + ... + 1518612.

It is an arithmetic number, because the mean of its divisors is an integer number (109319832).

Almost surely, 2^856338402 is an apocalyptic number.

856338402 is an abundant number, since it is smaller than the sum of its proper divisors (892778910).

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

856338402 is a wasteful number, since it uses less digits than its factorization.

856338402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036713.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 856338402 is about 29263.2602763260. The cubic root of 856338402 is about 949.6169839178.

The spelling of 856338402 in words is "eight hundred fifty-six million, three hundred thirty-eight thousand, four hundred two".