87038780 has 24 divisors (see below), whose sum is σ = 184987152. Its totient is φ = 34395392.

The previous prime is 87038771. The next prime is 87038801. The reversal of 87038780 is 8783078.

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, 24557 + ... + 27876.

It is an arithmetic number, because the mean of its divisors is an integer number (7707798).

Almost surely, 2^87038780 is an apocalyptic number.

It is an amenable number.

87038780 is an abundant number, since it is smaller than the sum of its proper divisors (97948372).

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

87038780 is a wasteful number, since it uses less digits than its factorization.

87038780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52525 (or 52523 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 87038780 is about 9329.4576476878. The cubic root of 87038780 is about 443.1705899476.

The spelling of 87038780 in words is "eighty-seven million, thirty-eight thousand, seven hundred eighty".