82040015 has 16 divisors (see below), whose sum is σ = 99967296. Its totient is φ = 64627200.

The previous prime is 82039987. The next prime is 82040017. The reversal of 82040015 is 51004028.

It is not a de Polignac number, because 82040015 - 2¹⁴ = 82023631 is a prime.

It is a super-2 number, since 2×82040015² = 13461128122400450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82040017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123785 + ... + 124445.

It is an arithmetic number, because the mean of its divisors is an integer number (6247956).

Almost surely, 2^82040015 is an apocalyptic number.

82040015 is a deficient number, since it is larger than the sum of its proper divisors (17927281).

82040015 is a wasteful number, since it uses less digits than its factorization.

82040015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 82040015 is about 9057.5943274139. The cubic root of 82040015 is about 434.5188055510.

The spelling of 82040015 in words is "eighty-two million, forty thousand, fifteen".