87918132 has 12 divisors (see below), whose sum is σ = 205142336. Its totient is φ = 29306040.

The previous prime is 87918119. The next prime is 87918133. The reversal of 87918132 is 23181978.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87918133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3663244 + ... + 3663267.

Almost surely, 2^87918132 is an apocalyptic number.

It is an amenable number.

87918132 is an abundant number, since it is smaller than the sum of its proper divisors (117224204).

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

87918132 is a wasteful number, since it uses less digits than its factorization.

87918132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7326518 (or 7326516 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 87918132 is about 9376.4669252336. The cubic root of 87918132 is about 444.6580413766.

The spelling of 87918132 in words is "eighty-seven million, nine hundred eighteen thousand, one hundred thirty-two".