87900978 has 32 divisors (see below), whose sum is σ = 192119040. Its totient is φ = 26590160.

The previous prime is 87900949. The next prime is 87900997.

87900978 is nontrivially palindromic in base 10.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 66601 + ... + 67907.

It is an arithmetic number, because the mean of its divisors is an integer number (6003720).

Almost surely, 2^87900978 is an apocalyptic number.

87900978 is an abundant number, since it is smaller than the sum of its proper divisors (104218062).

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

87900978 is a wasteful number, since it uses less digits than its factorization.

87900978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342.

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 87900978 is about 9375.5521437407. The cubic root of 87900978 is about 444.6291199243.

The spelling of 87900978 in words is "eighty-seven million, nine hundred thousand, nine hundred seventy-eight".