82402015 has 12 divisors (see below), whose sum is σ = 100800504. Its totient is φ = 64666784.

The previous prime is 82402007. The next prime is 82402049. The reversal of 82402015 is 51020428.

It is not a de Polignac number, because 82402015 - 2³ = 82402007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11112 + ... + 16978.

It is an arithmetic number, because the mean of its divisors is an integer number (8400042).

Almost surely, 2^82402015 is an apocalyptic number.

82402015 is a deficient number, since it is larger than the sum of its proper divisors (18398489).

82402015 is an equidigital number, since it uses as much as digits as its factorization.

82402015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978 (or 5925 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 82402015 is about 9077.5555630357. Note that the first 4 decimals coincide. The cubic root of 82402015 is about 435.1569698182.

The spelling of 82402015 in words is "eighty-two million, four hundred two thousand, fifteen".