91798008 has 32 divisors (see below), whose sum is σ = 230020560. Its totient is φ = 30529280.

The previous prime is 91798001. The next prime is 91798009. The reversal of 91798008 is 80089719.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91798001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6916 + ... + 15212.

Almost surely, 2^91798008 is an apocalyptic number.

91798008 is the 5532-nd octagonal number.

It is an amenable number.

91798008 is an abundant number, since it is smaller than the sum of its proper divisors (138222552).

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

91798008 is a wasteful number, since it uses less digits than its factorization.

91798008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8767 (or 8763 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 91798008 is about 9581.1276998065. The cubic root of 91798008 is about 451.1051159189.

The spelling of 91798008 in words is "ninety-one million, seven hundred ninety-eight thousand, eight".