87057444 has 24 divisors (see below), whose sum is σ = 203333760. Its totient is φ = 28990624.

The previous prime is 87057433. The next prime is 87057469. The reversal of 87057444 is 44475078.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11797 + ... + 17699.

It is an arithmetic number, because the mean of its divisors is an integer number (8472240).

Almost surely, 2^87057444 is an apocalyptic number.

It is an amenable number.

87057444 is an abundant number, since it is smaller than the sum of its proper divisors (116276316).

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

87057444 is a wasteful number, since it uses less digits than its factorization.

87057444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7139 (or 7137 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 39.

The square root of 87057444 is about 9330.4578665787. The cubic root of 87057444 is about 443.2022645060.

The spelling of 87057444 in words is "eighty-seven million, fifty-seven thousand, four hundred forty-four".