91296744 has 128 divisors (see below), whose sum is σ = 287539200. Its totient is φ = 23466240.

The previous prime is 91296739. The next prime is 91296757. The reversal of 91296744 is 44769219.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 91296696 and 91296705.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 234502 + ... + 234890.

It is an arithmetic number, because the mean of its divisors is an integer number (2246400).

Almost surely, 2^91296744 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 91296744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143769600).

91296744 is an abundant number, since it is smaller than the sum of its proper divisors (196242456).

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

91296744 is a wasteful number, since it uses less digits than its factorization.

91296744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 539 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 91296744 is about 9554.9329667978. The cubic root of 91296744 is about 450.2825287524.

It can be divided in two parts, 91 and 296744, that added together give a triangular number (296835 = T₇₇₀).

The spelling of 91296744 in words is "ninety-one million, two hundred ninety-six thousand, seven hundred forty-four".