856704930 has 16 divisors (see below), whose sum is σ = 2056091904. Its totient is φ = 228454640.

The previous prime is 856704929. The next prime is 856704931. The reversal of 856704930 is 39407658.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (856704929) and next prime (856704931).

It is not an unprimeable number, because it can be changed into a prime (856704931) 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, 14278386 + ... + 14278445.

It is an arithmetic number, because the mean of its divisors is an integer number (128505744).

Almost surely, 2^856704930 is an apocalyptic number.

856704930 is an abundant number, since it is smaller than the sum of its proper divisors (1199386974).

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

856704930 is a wasteful number, since it uses less digits than its factorization.

856704930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28556841.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 856704930 is about 29269.5222031382. The cubic root of 856704930 is about 949.7524488874.

The spelling of 856704930 in words is "eight hundred fifty-six million, seven hundred four thousand, nine hundred thirty".