100398088 has 64 divisors (see below), whose sum is σ = 224133120. Its totient is φ = 41256000.

The previous prime is 100398061. The next prime is 100398091. The reversal of 100398088 is 880893001.

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, 261945 + ... + 262327.

It is an arithmetic number, because the mean of its divisors is an integer number (3502080).

Almost surely, 2^100398088 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 100398088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112066560).

100398088 is an abundant number, since it is smaller than the sum of its proper divisors (123735032).

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

100398088 is a wasteful number, since it uses less digits than its factorization.

100398088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 100398088 is about 10019.8846300743. The cubic root of 100398088 is about 464.7739881343.

The spelling of 100398088 in words is "one hundred million, three hundred ninety-eight thousand, eighty-eight".