87400472 has 16 divisors (see below), whose sum is σ = 164028240. Its totient is φ = 43659616.

The previous prime is 87400471. The next prime is 87400493. The reversal of 87400472 is 27400478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87400471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5318 + ... + 14250.

It is an arithmetic number, because the mean of its divisors is an integer number (10251765).

Almost surely, 2^87400472 is an apocalyptic number.

It is an amenable number.

87400472 is a deficient number, since it is larger than the sum of its proper divisors (76627768).

87400472 is a wasteful number, since it uses less digits than its factorization.

87400472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10162 (or 10158 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 87400472 is about 9348.8219578726. The cubic root of 87400472 is about 443.7836107055.

The spelling of 87400472 in words is "eighty-seven million, four hundred thousand, four hundred seventy-two".