82441864 has 8 divisors (see below), whose sum is σ = 154578510. Its totient is φ = 41220928.

The previous prime is 82441861. The next prime is 82441897. The reversal of 82441864 is 46814428.

It can be written as a sum of positive squares in only one way, i.e., 62568100 + 19873764 = 7910^2 + 4458^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (82441861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5152609 + ... + 5152624.

Almost surely, 2^82441864 is an apocalyptic number.

It is an amenable number.

82441864 is a deficient number, since it is larger than the sum of its proper divisors (72136646).

82441864 is a wasteful number, since it uses less digits than its factorization.

82441864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10305239 (or 10305235 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The square root of 82441864 is about 9079.7502168287. The cubic root of 82441864 is about 435.2271047358.

The spelling of 82441864 in words is "eighty-two million, four hundred forty-one thousand, eight hundred sixty-four".