99881740 has 48 divisors (see below), whose sum is σ = 245577024. Its totient is φ = 33408000.

The previous prime is 99881729. The next prime is 99881767. The reversal of 99881740 is 4718899.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2961 + ... + 14440.

It is an arithmetic number, because the mean of its divisors is an integer number (5116188).

Almost surely, 2^99881740 is an apocalyptic number.

It is an amenable number.

99881740 is an abundant number, since it is smaller than the sum of its proper divisors (145695284).

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

99881740 is a wasteful number, since it uses less digits than its factorization.

99881740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17458 (or 17456 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 99881740 is about 9994.0852507871. The cubic root of 99881740 is about 463.9758397547.

The spelling of 99881740 in words is "ninety-nine million, eight hundred eighty-one thousand, seven hundred forty".