99450720 has 96 divisors (see below), whose sum is σ = 348092640. Its totient is φ = 26519040.

The previous prime is 99450719. The next prime is 99450733. The reversal of 99450720 is 2705499.

It is a tau number, because it is divible by the number of its divisors (96).

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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7191 + ... + 15830.

It is an arithmetic number, because the mean of its divisors is an integer number (3625965).

Almost surely, 2^99450720 is an apocalyptic number.

99450720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99450720 is an abundant number, since it is smaller than the sum of its proper divisors (248641920).

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

99450720 is a wasteful number, since it uses less digits than its factorization.

99450720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23045 (or 23031 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 99450720 is about 9972.4981825017. The cubic root of 99450720 is about 463.3074786164.

The spelling of 99450720 in words is "ninety-nine million, four hundred fifty thousand, seven hundred twenty".