99124920 has 96 divisors (see below), whose sum is σ = 323734320. Its totient is φ = 26304000.

The previous prime is 99124913. The next prime is 99124937. The reversal of 99124920 is 2942199.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89812 + ... + 90908.

Almost surely, 2^99124920 is an apocalyptic number.

99124920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99124920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161867160).

99124920 is an abundant number, since it is smaller than the sum of its proper divisors (224609400).

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

99124920 is a wasteful number, since it uses less digits than its factorization.

99124920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365 (or 1358 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 99124920 is about 9956.1498582534. The cubic root of 99124920 is about 462.8009942341.

The spelling of 99124920 in words is "ninety-nine million, one hundred twenty-four thousand, nine hundred twenty".