87790980 has 24 divisors (see below), whose sum is σ = 245814912. Its totient is φ = 23410912.

The previous prime is 87790979. The next prime is 87790991. The reversal of 87790980 is 8909778.

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 7 ways as a sum of consecutive naturals, for example, 731532 + ... + 731651.

It is an arithmetic number, because the mean of its divisors is an integer number (10242288).

Almost surely, 2^87790980 is an apocalyptic number.

It is an amenable number.

87790980 is an abundant number, since it is smaller than the sum of its proper divisors (158023932).

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

87790980 is a wasteful number, since it uses less digits than its factorization.

87790980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463195 (or 1463193 counting only the distinct ones).

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

The square root of 87790980 is about 9369.6840928603. The cubic root of 87790980 is about 444.4435750446.

The spelling of 87790980 in words is "eighty-seven million, seven hundred ninety thousand, nine hundred eighty".