82920015 has 12 divisors (see below), whose sum is σ = 143728104. Its totient is φ = 44223984.

The previous prime is 82920011. The next prime is 82920017. The reversal of 82920015 is 51002928.

It is not a de Polignac number, because 82920015 - 2² = 82920011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82920011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921289 + ... + 921378.

It is an arithmetic number, because the mean of its divisors is an integer number (11977342).

Almost surely, 2^82920015 is an apocalyptic number.

82920015 is a deficient number, since it is larger than the sum of its proper divisors (60808089).

82920015 is a wasteful number, since it uses less digits than its factorization.

82920015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842678 (or 1842675 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 82920015 is about 9106.0427738947. The cubic root of 82920015 is about 436.0669015398.

The spelling of 82920015 in words is "eighty-two million, nine hundred twenty thousand, fifteen".