87257480 has 32 divisors (see below), whose sum is σ = 198244800. Its totient is φ = 34562496.

The previous prime is 87257477. The next prime is 87257483. The reversal of 87257480 is 8475278.

It is an interprime number because it is at equal distance from previous prime (87257477) and next prime (87257483).

It is a super-2 number, since 2×87257480² = 15227735631900800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87257483) 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, 6470 + ... + 14709.

It is an arithmetic number, because the mean of its divisors is an integer number (6195150).

Almost surely, 2^87257480 is an apocalyptic number.

It is an amenable number.

87257480 is an abundant number, since it is smaller than the sum of its proper divisors (110987320).

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

87257480 is a wasteful number, since it uses less digits than its factorization.

87257480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21293 (or 21289 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 87257480 is about 9341.1712327738. The cubic root of 87257480 is about 443.5414604335.

The spelling of 87257480 in words is "eighty-seven million, two hundred fifty-seven thousand, four hundred eighty".