87213452 has 12 divisors (see below), whose sum is σ = 153506976. Its totient is φ = 43354320.

The previous prime is 87213443. The next prime is 87213457. The reversal of 87213452 is 25431278.

It is not an unprimeable number, because it can be changed into a prime (87213457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62324 + ... + 63707.

It is an arithmetic number, because the mean of its divisors is an integer number (12792248).

Almost surely, 2^87213452 is an apocalyptic number.

It is an amenable number.

87213452 is a deficient number, since it is larger than the sum of its proper divisors (66293524).

87213452 is a wasteful number, since it uses less digits than its factorization.

87213452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126208 (or 126206 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 87213452 is about 9338.8142716300. The cubic root of 87213452 is about 443.4668478087.

The spelling of 87213452 in words is "eighty-seven million, two hundred thirteen thousand, four hundred fifty-two".