91049232 has 80 divisors (see below), whose sum is σ = 248619008. Its totient is φ = 28667520.

The previous prime is 91049207. The next prime is 91049239. The reversal of 91049232 is 23294019.

It is a self number, because there is not a number n which added to its sum of digits gives 91049232.

It is not an unprimeable number, because it can be changed into a prime (91049239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63273 + ... + 64695.

Almost surely, 2^91049232 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 91049232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124309504).

91049232 is an abundant number, since it is smaller than the sum of its proper divisors (157569776).

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

91049232 is a wasteful number, since it uses less digits than its factorization.

91049232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1502 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 91049232 is about 9541.9721232039. The cubic root of 91049232 is about 449.8752444290.

It can be divided in two parts, 9104 and 9232, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 91049232 in words is "ninety-one million, forty-nine thousand, two hundred thirty-two".