91085272 has 32 divisors (see below), whose sum is σ = 176314320. Its totient is φ = 44085760.

The previous prime is 91085263. The next prime is 91085273. The reversal of 91085272 is 27258019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91085273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43923 + ... + 45949.

Almost surely, 2^91085272 is an apocalyptic number.

It is an amenable number.

91085272 is a deficient number, since it is larger than the sum of its proper divisors (85229048).

91085272 is a wasteful number, since it uses less digits than its factorization.

91085272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 91085272 is about 9543.8604348555. The cubic root of 91085272 is about 449.9345946093.

The spelling of 91085272 in words is "ninety-one million, eighty-five thousand, two hundred seventy-two".