99810072 has 48 divisors (see below), whose sum is σ = 276920280. Its totient is φ = 32457600.

The previous prime is 99810047. The next prime is 99810121. The reversal of 99810072 is 27001899.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13954 + ... + 19857.

Almost surely, 2^99810072 is an apocalyptic number.

It is an amenable number.

99810072 is an abundant number, since it is smaller than the sum of its proper divisors (177110208).

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

99810072 is a wasteful number, since it uses less digits than its factorization.

99810072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33864 (or 33857 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 99810072 is about 9990.4990866323. The cubic root of 99810072 is about 463.8648412319.

The spelling of 99810072 in words is "ninety-nine million, eight hundred ten thousand, seventy-two".