91474056 has 128 divisors (see below), whose sum is σ = 276480000. Its totient is φ = 27915840.

The previous prime is 91474049. The next prime is 91474063. The reversal of 91474056 is 65047419.

It is an interprime number because it is at equal distance from previous prime (91474049) and next prime (91474063).

It is a super-2 number, since 2×91474056² = 16735005842182272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 91474056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126865 + ... + 127583.

It is an arithmetic number, because the mean of its divisors is an integer number (2160000).

Almost surely, 2^91474056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91474056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138240000).

91474056 is an abundant number, since it is smaller than the sum of its proper divisors (185005944).

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

91474056 is a wasteful number, since it uses less digits than its factorization.

91474056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 91474056 is about 9564.2070241082. The cubic root of 91474056 is about 450.5738456914.

It can be divided in two parts, 9147 and 4056, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 91474056 in words is "ninety-one million, four hundred seventy-four thousand, fifty-six".