87130944 has 56 divisors (see below), whose sum is σ = 256153920. Its totient is φ = 29043072.

The previous prime is 87130919. The next prime is 87130957. The reversal of 87130944 is 44903178.

It is a happy number.

It is a super-2 number, since 2×87130944² = 15183602804662272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 87130899 and 87130908.

It is a congruent 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, 23484 + ... + 26939.

Almost surely, 2^87130944 is an apocalyptic number.

It is an amenable number.

87130944 is an abundant number, since it is smaller than the sum of its proper divisors (169022976).

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

87130944 is a wasteful number, since it uses less digits than its factorization.

87130944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50444 (or 50428 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 87130944 is about 9334.3957490563. The cubic root of 87130944 is about 443.3269568998.

The spelling of 87130944 in words is "eighty-seven million, one hundred thirty thousand, nine hundred forty-four".