99507420 has 48 divisors (see below), whose sum is σ = 309580320. Its totient is φ = 26535168.

The previous prime is 99507391. The next prime is 99507431. The reversal of 99507420 is 2470599.

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, 91597 + ... + 92676.

It is an arithmetic number, because the mean of its divisors is an integer number (6449590).

Almost surely, 2^99507420 is an apocalyptic number.

99507420 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99507420 is an abundant number, since it is smaller than the sum of its proper divisors (210072900).

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

99507420 is a wasteful number, since it uses less digits than its factorization.

99507420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184291 (or 184283 counting only the distinct ones).

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

The square root of 99507420 is about 9975.3405956890. The cubic root of 99507420 is about 463.3955106362.

The spelling of 99507420 in words is "ninety-nine million, five hundred seven thousand, four hundred twenty".