82072915 has 8 divisors (see below), whose sum is σ = 98701200. Its totient is φ = 65515872.

The previous prime is 82072909. The next prime is 82072931. The reversal of 82072915 is 51927028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82072915 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15240 + ... + 19909.

It is an arithmetic number, because the mean of its divisors is an integer number (12337650).

Almost surely, 2^82072915 is an apocalyptic number.

82072915 is a deficient number, since it is larger than the sum of its proper divisors (16628285).

82072915 is a wasteful number, since it uses less digits than its factorization.

82072915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35621.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 82072915 is about 9059.4103008971. The cubic root of 82072915 is about 434.5768819184.

The spelling of 82072915 in words is "eighty-two million, seventy-two thousand, nine hundred fifteen".