99123240 has 64 divisors (see below), whose sum is σ = 304637760. Its totient is φ = 25786880.

The previous prime is 99123229. The next prime is 99123253. The reversal of 99123240 is 4232199.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 99123198 and 99123207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5154 + ... + 14993.

It is an arithmetic number, because the mean of its divisors is an integer number (4759965).

Almost surely, 2^99123240 is an apocalyptic number.

It is an amenable number.

99123240 is an abundant number, since it is smaller than the sum of its proper divisors (205514520).

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

99123240 is a wasteful number, since it uses less digits than its factorization.

99123240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202 (or 20198 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 99123240 is about 9956.0654879325. The cubic root of 99123240 is about 462.7983796542.

The spelling of 99123240 in words is "ninety-nine million, one hundred twenty-three thousand, two hundred forty".