87620172432 has 80 divisors (see below), whose sum is σ = 243815644800. Its totient is φ = 26954320896.

The previous prime is 87620172427. The next prime is 87620172433. The reversal of 87620172432 is 23427102678.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87620172433) 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, 3637773 + ... + 3661779.

It is an arithmetic number, because the mean of its divisors is an integer number (3047695560).

Almost surely, 2^87620172432 is an apocalyptic number.

It is an amenable number.

87620172432 is an abundant number, since it is smaller than the sum of its proper divisors (156195472368).

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

87620172432 is a wasteful number, since it uses less digits than its factorization.

87620172432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29880 (or 29874 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 87620172432 in words is "eighty-seven billion, six hundred twenty million, one hundred seventy-two thousand, four hundred thirty-two".