91256 has 32 divisors (see below), whose sum is σ = 200880. Its totient is φ = 38400.
The previous prime is 91253. The next prime is 91283. The reversal of 91256 is 65219.
91256 = T95 + T96 + ... + T111.
It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (91253) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466 + ... + 1526.
291256 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 91256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100440).
91256 is an abundant number, since it is smaller than the sum of its proper divisors (109624).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
91256 is a wasteful number, since it uses less digits than its factorization.
91256 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 95 (or 91 counting only the distinct ones).
The product of its digits is 540, while the sum is 23.
The square root of 91256 is about 302.0860804473. The cubic root of 91256 is about 45.0215534610.
The spelling of 91256 in words is "ninety-one thousand, two hundred fifty-six".
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