856116252 has 18 divisors (see below), whose sum is σ = 2164071728. Its totient is φ = 285372072.

The previous prime is 856116229. The next prime is 856116319. The reversal of 856116252 is 252611658.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 23781007 = 856116252 / (8 + 5 + 6 + 1 + 1 + 6 + 2 + 5 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11890468 + ... + 11890539.

Almost surely, 2^856116252 is an apocalyptic number.

It is an amenable number.

856116252 is an abundant number, since it is smaller than the sum of its proper divisors (1307955476).

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

856116252 is a wasteful number, since it uses less digits than its factorization.

856116252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23781017 (or 23781012 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 856116252 is about 29259.4643149870. The cubic root of 856116252 is about 949.5348607536.

The spelling of 856116252 in words is "eight hundred fifty-six million, one hundred sixteen thousand, two hundred fifty-two".