87872272 has 20 divisors (see below), whose sum is σ = 171341836. Its totient is φ = 43655040.

The previous prime is 87872249. The next prime is 87872293. The reversal of 87872272 is 27227878.

It can be written as a sum of positive squares in 2 ways, for example, as 37405456 + 50466816 = 6116^2 + 7104^2 .

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, 14979 + ... + 20002.

Almost surely, 2^87872272 is an apocalyptic number.

It is an amenable number.

87872272 is a deficient number, since it is larger than the sum of its proper divisors (83469564).

87872272 is a wasteful number, since it uses less digits than its factorization.

87872272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35146 (or 35140 counting only the distinct ones).

The product of its digits is 175616, while the sum is 43.

The square root of 87872272 is about 9374.0211222292. The cubic root of 87872272 is about 444.5807135112.

The spelling of 87872272 in words is "eighty-seven million, eight hundred seventy-two thousand, two hundred seventy-two".