91628782 has 16 divisors (see below), whose sum is σ = 159068160. Its totient is φ = 38771928.

The previous prime is 91628753. The next prime is 91628783. The reversal of 91628782 is 28782619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91628783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40318 + ... + 42529.

It is an arithmetic number, because the mean of its divisors is an integer number (9941760).

Almost surely, 2^91628782 is an apocalyptic number.

91628782 is a deficient number, since it is larger than the sum of its proper divisors (67439378).

91628782 is a wasteful number, since it uses less digits than its factorization.

91628782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82935.

The product of its digits is 96768, while the sum is 43.

The square root of 91628782 is about 9572.2924109118. The cubic root of 91628782 is about 450.8277472583.

The spelling of 91628782 in words is "ninety-one million, six hundred twenty-eight thousand, seven hundred eighty-two".