82515838 has 8 divisors (see below), whose sum is σ = 124054488. Its totient is φ = 41164344.

The previous prime is 82515833. The next prime is 82515887. The reversal of 82515838 is 83851528.

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

It is a self number, because there is not a number n which added to its sum of digits gives 82515838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82515833) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 45681 + ... + 47452.

It is an arithmetic number, because the mean of its divisors is an integer number (15506811).

Almost surely, 2^82515838 is an apocalyptic number.

82515838 is a deficient number, since it is larger than the sum of its proper divisors (41538650).

82515838 is a wasteful number, since it uses less digits than its factorization.

82515838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93578.

The product of its digits is 76800, while the sum is 40.

The square root of 82515838 is about 9083.8228736584. The cubic root of 82515838 is about 435.3572403390.

The spelling of 82515838 in words is "eighty-two million, five hundred fifteen thousand, eight hundred thirty-eight".