99081020 has 12 divisors (see below), whose sum is σ = 208070184. Its totient is φ = 39632400.

The previous prime is 99081013. The next prime is 99081041. The reversal of 99081020 is 2018099.

It is a congruent number.

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, 2477006 + ... + 2477045.

It is an arithmetic number, because the mean of its divisors is an integer number (17339182).

Almost surely, 2^99081020 is an apocalyptic number.

It is an amenable number.

99081020 is an abundant number, since it is smaller than the sum of its proper divisors (108989164).

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

99081020 is a wasteful number, since it uses less digits than its factorization.

99081020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4954060 (or 4954058 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 99081020 is about 9953.9449466028. The cubic root of 99081020 is about 462.7326630695.

The spelling of 99081020 in words is "ninety-nine million, eighty-one thousand, twenty".