99990576 has 180 divisors, whose sum is σ = 335192832. Its totient is φ = 27724032.

The previous prime is 99990571. The next prime is 99990577. The reversal of 99990576 is 67509999.

It is not an unprimeable number, because it can be changed into a prime (99990571) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 260881 + ... + 261263.

Almost surely, 2^99990576 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 99990576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167596416).

99990576 is an abundant number, since it is smaller than the sum of its proper divisors (235202256).

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

99990576 is a wasteful number, since it uses less digits than its factorization.

99990576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 54.

The square root of 99990576 is about 9999.5287888980. The cubic root of 99990576 is about 464.1443021255.

The spelling of 99990576 in words is "ninety-nine million, nine hundred ninety thousand, five hundred seventy-six".