87120700 has 36 divisors (see below), whose sum is σ = 199006360. Its totient is φ = 33013440.

The previous prime is 87120697. The next prime is 87120721. The reversal of 87120700 is 702178.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21027 + ... + 24826.

Almost surely, 2^87120700 is an apocalyptic number.

It is an amenable number.

87120700 is an abundant number, since it is smaller than the sum of its proper divisors (111885660).

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

87120700 is a wasteful number, since it uses less digits than its factorization.

87120700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45886 (or 45879 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 87120700 is about 9333.8470096740. The cubic root of 87120700 is about 443.3095822101.

Adding to 87120700 its reverse (702178), we get a palindrome (87822878).

The spelling of 87120700 in words is "eighty-seven million, one hundred twenty thousand, seven hundred".