87256444 has 96 divisors (see below), whose sum is σ = 188116992. Its totient is φ = 34944000.

The previous prime is 87256441. The next prime is 87256451. The reversal of 87256444 is 44465278.

It is a happy number.

It is a super-2 number, since 2×87256444² = 15227374039050272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87256397 and 87256406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87256441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1228929 + ... + 1228999.

It is an arithmetic number, because the mean of its divisors is an integer number (1959552).

Almost surely, 2^87256444 is an apocalyptic number.

It is an amenable number.

87256444 is an abundant number, since it is smaller than the sum of its proper divisors (100860548).

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

87256444 is a wasteful number, since it uses less digits than its factorization.

87256444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 185 counting only the distinct ones).

The product of its digits is 215040, while the sum is 40.

The square root of 87256444 is about 9341.1157791776. The cubic root of 87256444 is about 443.5397050509.

The spelling of 87256444 in words is "eighty-seven million, two hundred fifty-six thousand, four hundred forty-four".