87813076 has 18 divisors (see below), whose sum is σ = 166404462. Its totient is φ = 40528800.

The previous prime is 87813067. The next prime is 87813097. The reversal of 87813076 is 67031878.

It can be written as a sum of positive squares in 3 ways, for example, as 1768900 + 86044176 = 1330^2 + 9276^2 .

It is a super-2 number, since 2×87813076² = 15422272633163552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64275 + ... + 65626.

Almost surely, 2^87813076 is an apocalyptic number.

It is an amenable number.

87813076 is a deficient number, since it is larger than the sum of its proper divisors (78591386).

87813076 is a wasteful number, since it uses less digits than its factorization.

87813076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129931 (or 129916 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 87813076 is about 9370.8631406077. The cubic root of 87813076 is about 444.4808590627.

The spelling of 87813076 in words is "eighty-seven million, eight hundred thirteen thousand, seventy-six".