99315820 has 12 divisors (see below), whose sum is σ = 208563264. Its totient is φ = 39726320.

The previous prime is 99315791. The next prime is 99315883. The reversal of 99315820 is 2851399.

It is a self number, because there is not a number n which added to its sum of digits gives 99315820.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2482876 + ... + 2482915.

It is an arithmetic number, because the mean of its divisors is an integer number (17380272).

Almost surely, 2^99315820 is an apocalyptic number.

It is an amenable number.

99315820 is an abundant number, since it is smaller than the sum of its proper divisors (109247444).

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

99315820 is a wasteful number, since it uses less digits than its factorization.

99315820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4965800 (or 4965798 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 99315820 is about 9965.7322861895. The cubic root of 99315820 is about 463.0978992400.

It can be divided in two parts, 9931 and 5820, that added together give a palindrome (15751).

The spelling of 99315820 in words is "ninety-nine million, three hundred fifteen thousand, eight hundred twenty".