91134784 has 28 divisors (see below), whose sum is σ = 194758564. Its totient is φ = 42061824.

The previous prime is 91134781. The next prime is 91134787. The reversal of 91134784 is 48743119.

It is an interprime number because it is at equal distance from previous prime (91134781) and next prime (91134787).

It can be written as a sum of positive squares in 2 ways, for example, as 53582400 + 37552384 = 7320^2 + 6128^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91134781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53937 + ... + 55600.

It is an arithmetic number, because the mean of its divisors is an integer number (6955663).

Almost surely, 2^91134784 is an apocalyptic number.

It is an amenable number.

91134784 is an abundant number, since it is smaller than the sum of its proper divisors (103623780).

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

91134784 is a wasteful number, since it uses less digits than its factorization.

91134784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109562 (or 109552 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 91134784 is about 9546.4540013557. The cubic root of 91134784 is about 450.0161047734.

The spelling of 91134784 in words is "ninety-one million, one hundred thirty-four thousand, seven hundred eighty-four".