82724815 has 8 divisors (see below), whose sum is σ = 99340560. Its totient is φ = 66132672.

The previous prime is 82724777. The next prime is 82724821. The reversal of 82724815 is 51842728.

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

It is a cyclic number.

It is not a de Polignac number, because 82724815 - 2⁷ = 82724687 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 3051 + ... + 13219.

It is an arithmetic number, because the mean of its divisors is an integer number (12417570).

Almost surely, 2^82724815 is an apocalyptic number.

82724815 is a deficient number, since it is larger than the sum of its proper divisors (16615745).

82724815 is a wasteful number, since it uses less digits than its factorization.

82724815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11801.

The product of its digits is 35840, while the sum is 37.

The square root of 82724815 is about 9095.3183011921. The cubic root of 82724815 is about 435.7244545047.

The spelling of 82724815 in words is "eighty-two million, seven hundred twenty-four thousand, eight hundred fifteen".