87131260 has 12 divisors (see below), whose sum is σ = 182975688. Its totient is φ = 34852496.

The previous prime is 87131257. The next prime is 87131281. The reversal of 87131260 is 6213178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2178262 + ... + 2178301.

It is an arithmetic number, because the mean of its divisors is an integer number (15247974).

Almost surely, 2^87131260 is an apocalyptic number.

It is an amenable number.

87131260 is an abundant number, since it is smaller than the sum of its proper divisors (95844428).

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

87131260 is a wasteful number, since it uses less digits than its factorization.

87131260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356572 (or 4356570 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 87131260 is about 9334.4126756856. The cubic root of 87131260 is about 443.3274928408.

It can be divided in two parts, 871 and 31260, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 87131260 in words is "eighty-seven million, one hundred thirty-one thousand, two hundred sixty".