99933720 has 128 divisors (see below), whose sum is σ = 311351040. Its totient is φ = 25643520.

The previous prime is 99933709. The next prime is 99933727. The reversal of 99933720 is 2733999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99933727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 552030 + ... + 552210.

It is an arithmetic number, because the mean of its divisors is an integer number (2432430).

Almost surely, 2^99933720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99933720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155675520).

99933720 is an abundant number, since it is smaller than the sum of its proper divisors (211417320).

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

99933720 is a wasteful number, since it uses less digits than its factorization.

99933720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 42.

The square root of 99933720 is about 9996.6854506881. The cubic root of 99933720 is about 464.0563125273.

The spelling of 99933720 in words is "ninety-nine million, nine hundred thirty-three thousand, seven hundred twenty".