91426168 has 8 divisors (see below), whose sum is σ = 171424080. Its totient is φ = 45713080.

The previous prime is 91426163. The next prime is 91426169. The reversal of 91426168 is 86162419.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91426163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5714128 + ... + 5714143.

It is an arithmetic number, because the mean of its divisors is an integer number (21428010).

Almost surely, 2^91426168 is an apocalyptic number.

It is an amenable number.

91426168 is a deficient number, since it is larger than the sum of its proper divisors (79997912).

91426168 is a wasteful number, since it uses less digits than its factorization.

91426168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11428277 (or 11428273 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 91426168 is about 9561.7031955609. The cubic root of 91426168 is about 450.4952046440.

The spelling of 91426168 in words is "ninety-one million, four hundred twenty-six thousand, one hundred sixty-eight".