91392120 has 48 divisors (see below), whose sum is σ = 297025560. Its totient is φ = 24371136.

The previous prime is 91392107. The next prime is 91392181. The reversal of 91392120 is 2129319.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126574 + ... + 127293.

Almost surely, 2^91392120 is an apocalyptic number.

91392120 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

91392120 is an abundant number, since it is smaller than the sum of its proper divisors (205633440).

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

91392120 is a wasteful number, since it uses less digits than its factorization.

91392120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253884 (or 253877 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 91392120 is about 9559.9225938289. The cubic root of 91392120 is about 450.4392747590.

The spelling of 91392120 in words is "ninety-one million, three hundred ninety-two thousand, one hundred twenty".