856914528 has 96 divisors (see below), whose sum is σ = 2312271360. Its totient is φ = 277736960.

The previous prime is 856914503. The next prime is 856914551. The reversal of 856914528 is 825419658.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807118 + ... + 808178.

It is an arithmetic number, because the mean of its divisors is an integer number (24086160).

Almost surely, 2^856914528 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 856914528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156135680).

856914528 is an abundant number, since it is smaller than the sum of its proper divisors (1455356832).

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

856914528 is a wasteful number, since it uses less digits than its factorization.

856914528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1292 counting only the distinct ones).

The product of its digits is 691200, while the sum is 48.

The square root of 856914528 is about 29273.1024662573. The cubic root of 856914528 is about 949.8298967830.

The spelling of 856914528 in words is "eight hundred fifty-six million, nine hundred fourteen thousand, five hundred twenty-eight".