91882816 has 14 divisors (see below), whose sum is σ = 182330090. Its totient is φ = 45941376.

The previous prime is 91882811. The next prime is 91882823. The reversal of 91882816 is 61828819.

It can be written as a sum of positive squares in only one way, i.e., 82882816 + 9000000 = 9104^2 + 3000^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91882811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717771 + ... + 717898.

Almost surely, 2^91882816 is an apocalyptic number.

It is an amenable number.

91882816 is a deficient number, since it is larger than the sum of its proper divisors (90447274).

91882816 is a wasteful number, since it uses less digits than its factorization.

91882816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435681 (or 1435671 counting only the distinct ones).

The product of its digits is 55296, while the sum is 43.

The square root of 91882816 is about 9585.5524619085. The cubic root of 91882816 is about 451.2439916532.

The spelling of 91882816 in words is "ninety-one million, eight hundred eighty-two thousand, eight hundred sixteen".