82271664 has 30 divisors (see below), whose sum is σ = 230246796. Its totient is φ = 27423840.

The previous prime is 82271663. The next prime is 82271669. The reversal of 82271664 is 46617228.

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

It is not an unprimeable number, because it can be changed into a prime (82271663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 285522 + ... + 285809.

Almost surely, 2^82271664 is an apocalyptic number.

It is an amenable number.

82271664 is an abundant number, since it is smaller than the sum of its proper divisors (147975132).

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

82271664 is a wasteful number, since it uses less digits than its factorization.

82271664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571345 (or 571336 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 82271664 is about 9070.3728699541. The cubic root of 82271664 is about 434.9273917655.

The spelling of 82271664 in words is "eighty-two million, two hundred seventy-one thousand, six hundred sixty-four".