87972282 has 24 divisors (see below), whose sum is σ = 191891700. Its totient is φ = 29126400.

The previous prime is 87972277. The next prime is 87972301. The reversal of 87972282 is 28227978.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 73977201 + 13995081 = 8601^2 + 3741^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13719 + ... + 19082.

Almost surely, 2^87972282 is an apocalyptic number.

87972282 is an abundant number, since it is smaller than the sum of its proper divisors (103919418).

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

87972282 is a wasteful number, since it uses less digits than its factorization.

87972282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32958 (or 32955 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 87972282 is about 9379.3540289297. The cubic root of 87972282 is about 444.7493129976.

The spelling of 87972282 in words is "eighty-seven million, nine hundred seventy-two thousand, two hundred eighty-two".