91142256 has 40 divisors (see below), whose sum is σ = 239448960. Its totient is φ = 29864896.

The previous prime is 91142239. The next prime is 91142269. The reversal of 91142256 is 65224119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13260 + ... + 18923.

It is an arithmetic number, because the mean of its divisors is an integer number (5986224).

Almost surely, 2^91142256 is an apocalyptic number.

It is an amenable number.

91142256 is an abundant number, since it is smaller than the sum of its proper divisors (148306704).

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

91142256 is a wasteful number, since it uses less digits than its factorization.

91142256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32253 (or 32247 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 91142256 is about 9546.8453428345. The cubic root of 91142256 is about 450.0284031455.

The spelling of 91142256 in words is "ninety-one million, one hundred forty-two thousand, two hundred fifty-six".