87978076 has 12 divisors (see below), whose sum is σ = 154027440. Its totient is φ = 43970240.

The previous prime is 87978061. The next prime is 87978097. The reversal of 87978076 is 67087978.

It is a happy number.

It is a congruent number.

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, 15060 + ... + 20068.

It is an arithmetic number, because the mean of its divisors is an integer number (12835620).

Almost surely, 2^87978076 is an apocalyptic number.

It is an amenable number.

87978076 is a deficient number, since it is larger than the sum of its proper divisors (66049364).

87978076 is a wasteful number, since it uses less digits than its factorization.

87978076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9404 (or 9402 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 87978076 is about 9379.6628937292. The cubic root of 87978076 is about 444.7590767584.

The spelling of 87978076 in words is "eighty-seven million, nine hundred seventy-eight thousand, seventy-six".