91134228 has 12 divisors (see below), whose sum is σ = 212646560. Its totient is φ = 30378072.

The previous prime is 91134223. The next prime is 91134233. The reversal of 91134228 is 82243119.

It is an interprime number because it is at equal distance from previous prime (91134223) and next prime (91134233).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 91134195 and 91134204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91134221) 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, 3797248 + ... + 3797271.

Almost surely, 2^91134228 is an apocalyptic number.

It is an amenable number.

91134228 is an abundant number, since it is smaller than the sum of its proper divisors (121512332).

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

91134228 is a wasteful number, since it uses less digits than its factorization.

91134228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7594526 (or 7594524 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 91134228 is about 9546.4248805508. The cubic root of 91134228 is about 450.0151896107.

The spelling of 91134228 in words is "ninety-one million, one hundred thirty-four thousand, two hundred twenty-eight".