9987523272 has 48 divisors (see below), whose sum is σ = 27076867740. Its totient is φ = 3325811328.

The previous prime is 9987523267. The next prime is 9987523283. The reversal of 9987523272 is 2723257899.

9987523272 is a `hidden beast` number, since 9 + 98 + 7 + 523 + 27 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6906607236 + 3080916036 = 83106^2 + 55506^2 .

It is a super-2 number, since 2×9987523272² (a number of 21 digits) contains 22 as substring.

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, 2218 + ... + 141350.

Almost surely, 2^9987523272 is an apocalyptic number.

It is an amenable number.

9987523272 is an abundant number, since it is smaller than the sum of its proper divisors (17089344468).

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

9987523272 is a wasteful number, since it uses less digits than its factorization.

9987523272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140142 (or 140135 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 9987523272 is about 99937.5968892588. The cubic root of 9987523272 is about 2153.5383072770.

The spelling of 9987523272 in words is "nine billion, nine hundred eighty-seven million, five hundred twenty-three thousand, two hundred seventy-two".