91269072 has 40 divisors (see below), whose sum is σ = 261977280. Its totient is φ = 30422880.

The previous prime is 91269071. The next prime is 91269077. The reversal of 91269072 is 27096219.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91269071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 105204 + ... + 106067.

It is an arithmetic number, because the mean of its divisors is an integer number (6549432).

Almost surely, 2^91269072 is an apocalyptic number.

It is an amenable number.

91269072 is an abundant number, since it is smaller than the sum of its proper divisors (170708208).

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

91269072 is a wasteful number, since it uses less digits than its factorization.

91269072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211288 (or 211276 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 91269072 is about 9553.4848092201. The cubic root of 91269072 is about 450.2370306813.

The spelling of 91269072 in words is "ninety-one million, two hundred sixty-nine thousand, seventy-two".