99724136 has 32 divisors (see below), whose sum is σ = 199886400. Its totient is φ = 46527360.

The previous prime is 99724129. The next prime is 99724151. The reversal of 99724136 is 63142799.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 99724093 and 99724102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935 + ... + 14153.

It is an arithmetic number, because the mean of its divisors is an integer number (6246450).

Almost surely, 2^99724136 is an apocalyptic number.

It is an amenable number.

99724136 is an abundant number, since it is smaller than the sum of its proper divisors (100162264).

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

99724136 is a wasteful number, since it uses less digits than its factorization.

99724136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13289 (or 13285 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 99724136 is about 9986.1972742381. The cubic root of 99724136 is about 463.7316745277.

The spelling of 99724136 in words is "ninety-nine million, seven hundred twenty-four thousand, one hundred thirty-six".