99900252 has 54 divisors (see below), whose sum is σ = 266550648. Its totient is φ = 31543344.

The previous prime is 99900221. The next prime is 99900253. The reversal of 99900252 is 25200999.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99900253) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9153 + ... + 16839.

Almost surely, 2^99900252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99900252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133275324).

99900252 is an abundant number, since it is smaller than the sum of its proper divisors (166650396).

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

99900252 is a wasteful number, since it uses less digits than its factorization.

99900252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7735 (or 7711 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 99900252 is about 9995.0113556714. The cubic root of 99900252 is about 464.0045022849.

The spelling of 99900252 in words is "ninety-nine million, nine hundred thousand, two hundred fifty-two".