91343856 has 160 divisors (see below), whose sum is σ = 270839808. Its totient is φ = 26357760.

The previous prime is 91343851. The next prime is 91343891. The reversal of 91343856 is 65834319.

91343856 = 1674² + 1675² + ... + 1705².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91343851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 581730 + ... + 581886.

Almost surely, 2^91343856 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 91343856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135419904).

91343856 is an abundant number, since it is smaller than the sum of its proper divisors (179495952).

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

91343856 is a wasteful number, since it uses less digits than its factorization.

91343856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 233 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 91343856 is about 9557.3979722517. The cubic root of 91343856 is about 450.3599687633.

The spelling of 91343856 in words is "ninety-one million, three hundred forty-three thousand, eight hundred fifty-six".