82872515 has 16 divisors (see below), whose sum is σ = 110799360. Its totient is φ = 58986720.

The previous prime is 82872511. The next prime is 82872523. The reversal of 82872515 is 51527828.

It is a happy number.

It is not a de Polignac number, because 82872515 - 2² = 82872511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82872511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13445 + ... + 18614.

It is an arithmetic number, because the mean of its divisors is an integer number (6924960).

Almost surely, 2^82872515 is an apocalyptic number.

82872515 is a deficient number, since it is larger than the sum of its proper divisors (27926845).

82872515 is a wasteful number, since it uses less digits than its factorization.

82872515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32122.

The product of its digits is 44800, while the sum is 38.

The square root of 82872515 is about 9103.4342420869. The cubic root of 82872515 is about 435.9836199413.

The spelling of 82872515 in words is "eighty-two million, eight hundred seventy-two thousand, five hundred fifteen".