856653152 has 36 divisors (see below), whose sum is σ = 1776797820. Its totient is φ = 405441216.

The previous prime is 856653131. The next prime is 856653157. The reversal of 856653152 is 251356658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856653157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 721103 + ... + 722289.

It is an arithmetic number, because the mean of its divisors is an integer number (49355495).

Almost surely, 2^856653152 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 856653152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888398910).

856653152 is an abundant number, since it is smaller than the sum of its proper divisors (920144668).

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

856653152 is an equidigital number, since it uses as much as digits as its factorization.

856653152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403 (or 1208 counting only the distinct ones).

The product of its digits is 216000, while the sum is 41.

The square root of 856653152 is about 29268.6376860967. The cubic root of 856653152 is about 949.7333146164.

The spelling of 856653152 in words is "eight hundred fifty-six million, six hundred fifty-three thousand, one hundred fifty-two".