82511218 has 8 divisors (see below), whose sum is σ = 123810048. Its totient is φ = 41241204.

The previous prime is 82511153. The next prime is 82511227. The reversal of 82511218 is 81211528.

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

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 3 ways as a sum of consecutive naturals, for example, 2655 + ... + 13117.

It is an arithmetic number, because the mean of its divisors is an integer number (15476256).

Almost surely, 2^82511218 is an apocalyptic number.

82511218 is a deficient number, since it is larger than the sum of its proper divisors (41298830).

82511218 is a wasteful number, since it uses less digits than its factorization.

82511218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14408.

The product of its digits is 1280, while the sum is 28.

The square root of 82511218 is about 9083.5685718775. The cubic root of 82511218 is about 435.3491150787.

The spelling of 82511218 in words is "eighty-two million, five hundred eleven thousand, two hundred eighteen".