91238080 has 28 divisors (see below), whose sum is σ = 217261440. Its totient is φ = 36495104.

The previous prime is 91238051. The next prime is 91238087. The reversal of 91238080 is 8083219.

It is a super-3 number, since 3×91238080³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91238087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142240 + ... + 142879.

Almost surely, 2^91238080 is an apocalyptic number.

It is an amenable number.

91238080 is an abundant number, since it is smaller than the sum of its proper divisors (126023360).

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

91238080 is a wasteful number, since it uses less digits than its factorization.

91238080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285136 (or 285126 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 91238080 is about 9551.8626455786. The cubic root of 91238080 is about 450.1860629750.

The spelling of 91238080 in words is "ninety-one million, two hundred thirty-eight thousand, eighty".