87487172 has 12 divisors (see below), whose sum is σ = 161160720. Its totient is φ = 41441256.

The previous prime is 87487157. The next prime is 87487181. The reversal of 87487172 is 27178478.

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, 575498 + ... + 575649.

It is an arithmetic number, because the mean of its divisors is an integer number (13430060).

Almost surely, 2^87487172 is an apocalyptic number.

It is an amenable number.

87487172 is a deficient number, since it is larger than the sum of its proper divisors (73673548).

87487172 is a wasteful number, since it uses less digits than its factorization.

87487172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151170 (or 1151168 counting only the distinct ones).

The product of its digits is 175616, while the sum is 44.

The square root of 87487172 is about 9353.4577563594. The cubic root of 87487172 is about 443.9303045109.

The spelling of 87487172 in words is "eighty-seven million, four hundred eighty-seven thousand, one hundred seventy-two".