91740812 has 12 divisors (see below), whose sum is σ = 160682760. Its totient is φ = 45831456.

The previous prime is 91740809. The next prime is 91740839. The reversal of 91740812 is 21804719.

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, 4073 + ... + 14144.

It is an arithmetic number, because the mean of its divisors is an integer number (13390230).

Almost surely, 2^91740812 is an apocalyptic number.

It is an amenable number.

91740812 is a deficient number, since it is larger than the sum of its proper divisors (68941948).

91740812 is a wasteful number, since it uses less digits than its factorization.

91740812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19480 (or 19478 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 91740812 is about 9578.1424086302. The cubic root of 91740812 is about 451.0114073905.

The spelling of 91740812 in words is "ninety-one million, seven hundred forty thousand, eight hundred twelve".