82491264 has 64 divisors (see below), whose sum is σ = 243474000. Its totient is φ = 27495936.

The previous prime is 82491257. The next prime is 82491281. The reversal of 82491264 is 46219428.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8479 + ... + 15390.

Almost surely, 2^82491264 is an apocalyptic number.

It is an amenable number.

82491264 is an abundant number, since it is smaller than the sum of its proper divisors (160982736).

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

82491264 is a wasteful number, since it uses less digits than its factorization.

82491264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23892 (or 23874 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 82491264 is about 9082.4701485884. The cubic root of 82491264 is about 435.3140182082.

The spelling of 82491264 in words is "eighty-two million, four hundred ninety-one thousand, two hundred sixty-four".