91085274 has 24 divisors (see below), whose sum is σ = 225544800. Its totient is φ = 26024328.

The previous prime is 91085273. The next prime is 91085299. The reversal of 91085274 is 47258019.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361324 + ... + 361575.

It is an arithmetic number, because the mean of its divisors is an integer number (9397700).

Almost surely, 2^91085274 is an apocalyptic number.

91085274 is an abundant number, since it is smaller than the sum of its proper divisors (134459526).

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

91085274 is a wasteful number, since it uses less digits than its factorization.

91085274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722914 (or 722911 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 91085274 is about 9543.8605396349. The cubic root of 91085274 is about 449.9345979025.

The spelling of 91085274 in words is "ninety-one million, eighty-five thousand, two hundred seventy-four".