99570132 has 18 divisors (see below), whose sum is σ = 251691258. Its totient is φ = 33190032.

The previous prime is 99570131. The next prime is 99570157. The reversal of 99570132 is 23107599.

It can be written as a sum of positive squares in only one way, i.e., 58430736 + 41139396 = 7644^2 + 6414^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×99570132² = 19828422372994848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2765837 = 99570132 / (9 + 9 + 5 + 7 + 0 + 1 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99570131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1382883 + ... + 1382954.

Almost surely, 2^99570132 is an apocalyptic number.

It is an amenable number.

99570132 is an abundant number, since it is smaller than the sum of its proper divisors (152121126).

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

99570132 is a wasteful number, since it uses less digits than its factorization.

99570132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765847 (or 2765842 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 99570132 is about 9978.4834519079. The cubic root of 99570132 is about 463.4928379060.

The spelling of 99570132 in words is "ninety-nine million, five hundred seventy thousand, one hundred thirty-two".