87257587272 has 16 divisors (see below), whose sum is σ = 218143968240. Its totient is φ = 29085862416.

The previous prime is 87257587247. The next prime is 87257587303. The reversal of 87257587272 is 27278575278.

It is a happy number.

It is a super-2 number, since 2×87257587272² (a number of 23 digits) contains 22 as substring.

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, 1817866378 + ... + 1817866425.

It is an arithmetic number, because the mean of its divisors is an integer number (13633998015).

Almost surely, 2^87257587272 is an apocalyptic number.

It is an amenable number.

87257587272 is an abundant number, since it is smaller than the sum of its proper divisors (130886380968).

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

87257587272 is a wasteful number, since it uses less digits than its factorization.

87257587272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635732812 (or 3635732808 counting only the distinct ones).

The product of its digits is 30732800, while the sum is 60.

The spelling of 87257587272 in words is "eighty-seven billion, two hundred fifty-seven million, five hundred eighty-seven thousand, two hundred seventy-two".