91938256 has 20 divisors (see below), whose sum is σ = 178336800. Its totient is φ = 45915872.

The previous prime is 91938247. The next prime is 91938263. The reversal of 91938256 is 65283919.

It is a happy number.

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, 13485 + ... + 19123.

It is an arithmetic number, because the mean of its divisors is an integer number (8916840).

Almost surely, 2^91938256 is an apocalyptic number.

It is an amenable number.

91938256 is a deficient number, since it is larger than the sum of its proper divisors (86398544).

91938256 is a wasteful number, since it uses less digits than its factorization.

91938256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666 (or 6660 counting only the distinct ones).

The product of its digits is 116640, while the sum is 43.

The square root of 91938256 is about 9588.4438779189. The cubic root of 91938256 is about 451.3347301907.

The spelling of 91938256 in words is "ninety-one million, nine hundred thirty-eight thousand, two hundred fifty-six".