87857256 has 32 divisors (see below), whose sum is σ = 224753760. Its totient is φ = 28604352.

The previous prime is 87857251. The next prime is 87857257. The reversal of 87857256 is 65275878.

It is not an unprimeable number, because it can be changed into a prime (87857251) 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, 41535 + ... + 43598.

It is an arithmetic number, because the mean of its divisors is an integer number (7023555).

Almost surely, 2^87857256 is an apocalyptic number.

87857256 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

87857256 is an abundant number, since it is smaller than the sum of its proper divisors (136896504).

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

87857256 is a wasteful number, since it uses less digits than its factorization.

87857256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85185 (or 85181 counting only the distinct ones).

The product of its digits is 940800, while the sum is 48.

The square root of 87857256 is about 9373.2201510473. The cubic root of 87857256 is about 444.5553880999. Note that the first 3 decimals are identical.

The spelling of 87857256 in words is "eighty-seven million, eight hundred fifty-seven thousand, two hundred fifty-six".