91782792 has 96 divisors (see below), whose sum is σ = 258223680. Its totient is φ = 29427840.

The previous prime is 91782791. The next prime is 91782793. The reversal of 91782792 is 29728719.

It is an interprime number because it is at equal distance from previous prime (91782791) and next prime (91782793).

It is not an unprimeable number, because it can be changed into a prime (91782791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 348853 + ... + 349115.

It is an arithmetic number, because the mean of its divisors is an integer number (2689830).

Almost surely, 2^91782792 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 91782792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129111840).

91782792 is an abundant number, since it is smaller than the sum of its proper divisors (166440888).

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

91782792 is a wasteful number, since it uses less digits than its factorization.

91782792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 436 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 91782792 is about 9580.3336058824. Note that the first 3 decimals coincide. The cubic root of 91782792 is about 451.0801901975.

The spelling of 91782792 in words is "ninety-one million, seven hundred eighty-two thousand, seven hundred ninety-two".