91338140 has 12 divisors (see below), whose sum is σ = 191810136. Its totient is φ = 36535248.

The previous prime is 91338131. The next prime is 91338157. The reversal of 91338140 is 4183319.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2283434 + ... + 2283473.

It is an arithmetic number, because the mean of its divisors is an integer number (15984178).

Almost surely, 2^91338140 is an apocalyptic number.

It is an amenable number.

91338140 is an abundant number, since it is smaller than the sum of its proper divisors (100471996).

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

91338140 is a wasteful number, since it uses less digits than its factorization.

91338140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566916 (or 4566914 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 91338140 is about 9557.0989322074. The cubic root of 91338140 is about 450.3505745490.

The spelling of 91338140 in words is "ninety-one million, three hundred thirty-eight thousand, one hundred forty".