99724275 has 36 divisors (see below), whose sum is σ = 204137232. Its totient is φ = 45587520.

The previous prime is 99724253. The next prime is 99724283. The reversal of 99724275 is 57242799.

It is not a de Polignac number, because 99724275 - 2⁸ = 99724019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 99724275.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30084 + ... + 33233.

Almost surely, 2^99724275 is an apocalyptic number.

99724275 is an abundant number, since it is smaller than the sum of its proper divisors (104412957).

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

99724275 is a wasteful number, since it uses less digits than its factorization.

99724275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63340 (or 63332 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 99724275 is about 9986.2042338418. The cubic root of 99724275 is about 463.7318899843.

It can be divided in two parts, 99724 and 275, that added together give a palindrome (99999).

The spelling of 99724275 in words is "ninety-nine million, seven hundred twenty-four thousand, two hundred seventy-five".