91795728 has 80 divisors (see below), whose sum is σ = 244109376. Its totient is φ = 29713920.

The previous prime is 91795723. The next prime is 91795741. The reversal of 91795728 is 82759719.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (91795721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313150 + ... + 313442.

Almost surely, 2^91795728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91795728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122054688).

91795728 is an abundant number, since it is smaller than the sum of its proper divisors (152313648).

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

91795728 is a wasteful number, since it uses less digits than its factorization.

91795728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 466 counting only the distinct ones).

The product of its digits is 317520, while the sum is 48.

The square root of 91795728 is about 9581.0087151615. The cubic root of 91795728 is about 451.1013811676.

The spelling of 91795728 in words is "ninety-one million, seven hundred ninety-five thousand, seven hundred twenty-eight".