87752172 has 12 divisors (see below), whose sum is σ = 204755096. Its totient is φ = 29250720.

The previous prime is 87752129. The next prime is 87752201. The reversal of 87752172 is 27125778.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 87752172.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3656329 + ... + 3656352.

Almost surely, 2^87752172 is an apocalyptic number.

It is an amenable number.

87752172 is an abundant number, since it is smaller than the sum of its proper divisors (117002924).

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

87752172 is a wasteful number, since it uses less digits than its factorization.

87752172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7312688 (or 7312686 counting only the distinct ones).

The product of its digits is 54880, while the sum is 39.

The square root of 87752172 is about 9367.6129296636. The cubic root of 87752172 is about 444.3780766362.

The spelling of 87752172 in words is "eighty-seven million, seven hundred fifty-two thousand, one hundred seventy-two".