87255930 has 16 divisors (see below), whose sum is σ = 209414304. Its totient is φ = 23268240.

The previous prime is 87255881. The next prime is 87255989. The reversal of 87255930 is 3955278.

It is a super-2 number, since 2×87255930² = 15227194640329800, which contains 22 as substring.

It is a Curzon number.

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, 1454236 + ... + 1454295.

It is an arithmetic number, because the mean of its divisors is an integer number (13088394).

Almost surely, 2^87255930 is an apocalyptic number.

87255930 is an abundant number, since it is smaller than the sum of its proper divisors (122158374).

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

87255930 is a wasteful number, since it uses less digits than its factorization.

87255930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908541.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 87255930 is about 9341.0882663638. The cubic root of 87255930 is about 443.5388341320.

The spelling of 87255930 in words is "eighty-seven million, two hundred fifty-five thousand, nine hundred thirty".