91307214 has 24 divisors (see below), whose sum is σ = 204215232. Its totient is φ = 29453760.

The previous prime is 91307213. The next prime is 91307239. The reversal of 91307214 is 41270319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91307213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81259 + ... + 82374.

It is an arithmetic number, because the mean of its divisors is an integer number (8508968).

Almost surely, 2^91307214 is an apocalyptic number.

91307214 is an abundant number, since it is smaller than the sum of its proper divisors (112908018).

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

91307214 is a wasteful number, since it uses less digits than its factorization.

91307214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163672 (or 163669 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 91307214 is about 9555.4808356252. The cubic root of 91307214 is about 450.2997410415.

The spelling of 91307214 in words is "ninety-one million, three hundred seven thousand, two hundred fourteen".