87415980 has 48 divisors (see below), whose sum is σ = 245760480. Its totient is φ = 23216128.

The previous prime is 87415969. The next prime is 87415987. The reversal of 87415980 is 8951478.

It is a super-5 number, since 5×87415980⁵ (a number of 41 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (87415987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12586 + ... + 18254.

It is an arithmetic number, because the mean of its divisors is an integer number (5120010).

Almost surely, 2^87415980 is an apocalyptic number.

It is an amenable number.

87415980 is an abundant number, since it is smaller than the sum of its proper divisors (158344500).

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

87415980 is a wasteful number, since it uses less digits than its factorization.

87415980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938 (or 5936 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 87415980 is about 9349.6513303973. The cubic root of 87415980 is about 443.8098568995.

The spelling of 87415980 in words is "eighty-seven million, four hundred fifteen thousand, nine hundred eighty".