91767140 has 12 divisors (see below), whose sum is σ = 192711036. Its totient is φ = 36706848.

The previous prime is 91767133. The next prime is 91767167. The reversal of 91767140 is 4176719.

It can be written as a sum of positive squares in 2 ways, for example, as 17255716 + 74511424 = 4154^2 + 8632^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91767140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2294159 + ... + 2294198.

It is an arithmetic number, because the mean of its divisors is an integer number (16059253).

Almost surely, 2^91767140 is an apocalyptic number.

It is an amenable number.

91767140 is an abundant number, since it is smaller than the sum of its proper divisors (100943896).

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

91767140 is a wasteful number, since it uses less digits than its factorization.

91767140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588366 (or 4588364 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 91767140 is about 9579.5166892699. The cubic root of 91767140 is about 451.0545473787.

The spelling of 91767140 in words is "ninety-one million, seven hundred sixty-seven thousand, one hundred forty".