82040272 has 20 divisors (see below), whose sum is σ = 160594756. Its totient is φ = 40596480.

The previous prime is 82040261. The next prime is 82040279. The reversal of 82040272 is 27204028.

It can be written as a sum of positive squares in 2 ways, for example, as 45751696 + 36288576 = 6764^2 + 6024^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82040279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24879 + ... + 27982.

Almost surely, 2^82040272 is an apocalyptic number.

It is an amenable number.

82040272 is a deficient number, since it is larger than the sum of its proper divisors (78554484).

82040272 is a wasteful number, since it uses less digits than its factorization.

82040272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52966 (or 52960 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 82040272 is about 9057.6085143927. The cubic root of 82040272 is about 434.5192592776.

The spelling of 82040272 in words is "eighty-two million, forty thousand, two hundred seventy-two".