82875815 has 32 divisors (see below), whose sum is σ = 115914240. Its totient is φ = 56246400.

The previous prime is 82875811. The next prime is 82875817. The reversal of 82875815 is 51857828.

It is not a de Polignac number, because 82875815 - 2² = 82875811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82875811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73637 + ... + 74753.

It is an arithmetic number, because the mean of its divisors is an integer number (3622320).

Almost surely, 2^82875815 is an apocalyptic number.

82875815 is a deficient number, since it is larger than the sum of its proper divisors (33038425).

82875815 is a wasteful number, since it uses less digits than its factorization.

82875815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223.

The product of its digits is 179200, while the sum is 44.

The square root of 82875815 is about 9103.6154905620. The cubic root of 82875815 is about 435.9894068492.

The spelling of 82875815 in words is "eighty-two million, eight hundred seventy-five thousand, eight hundred fifteen".