91928612 has 12 divisors (see below), whose sum is σ = 169342320. Its totient is φ = 43545096.

The previous prime is 91928611. The next prime is 91928621. The reversal of 91928612 is 21682919.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (91928611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604718 + ... + 604869.

It is an arithmetic number, because the mean of its divisors is an integer number (14111860).

Almost surely, 2^91928612 is an apocalyptic number.

It is an amenable number.

91928612 is a deficient number, since it is larger than the sum of its proper divisors (77413708).

91928612 is a wasteful number, since it uses less digits than its factorization.

91928612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209610 (or 1209608 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 91928612 is about 9587.9409676948. The cubic root of 91928612 is about 451.3189484964.

The spelling of 91928612 in words is "ninety-one million, nine hundred twenty-eight thousand, six hundred twelve".