87580220 has 48 divisors (see below), whose sum is σ = 226365888. Its totient is φ = 27717120.

The previous prime is 87580211. The next prime is 87580237. The reversal of 87580220 is 2208578.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22241 + ... + 25880.

It is an arithmetic number, because the mean of its divisors is an integer number (4715956).

Almost surely, 2^87580220 is an apocalyptic number.

It is an amenable number.

87580220 is an abundant number, since it is smaller than the sum of its proper divisors (138785668).

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

87580220 is a wasteful number, since it uses less digits than its factorization.

87580220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48150 (or 48148 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 87580220 is about 9358.4304239546. The cubic root of 87580220 is about 444.0876311626.

Adding to 87580220 its reverse (2208578), we get a palindrome (89788798).

The spelling of 87580220 in words is "eighty-seven million, five hundred eighty thousand, two hundred twenty".