99690252 has 12 divisors (see below), whose sum is σ = 232610616. Its totient is φ = 33230080.

The previous prime is 99690251. The next prime is 99690259. The reversal of 99690252 is 25209699.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (99690251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4153749 + ... + 4153772.

It is an arithmetic number, because the mean of its divisors is an integer number (19384218).

Almost surely, 2^99690252 is an apocalyptic number.

It is an amenable number.

99690252 is an abundant number, since it is smaller than the sum of its proper divisors (132920364).

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

99690252 is a wasteful number, since it uses less digits than its factorization.

99690252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8307528 (or 8307526 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 99690252 is about 9984.5005884120. The cubic root of 99690252 is about 463.6791467423.

The spelling of 99690252 in words is "ninety-nine million, six hundred ninety thousand, two hundred fifty-two".