82215004 has 24 divisors (see below), whose sum is σ = 147830256. Its totient is φ = 39984000.

The previous prime is 82214989. The next prime is 82215013. The reversal of 82215004 is 40051228.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 80014 + ... + 81034.

It is an arithmetic number, because the mean of its divisors is an integer number (6159594).

Almost surely, 2^82215004 is an apocalyptic number.

It is an amenable number.

82215004 is a deficient number, since it is larger than the sum of its proper divisors (65615252).

82215004 is a wasteful number, since it uses less digits than its factorization.

82215004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1555 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 82215004 is about 9067.2489763985. The cubic root of 82215004 is about 434.8275248768.

It can be divided in two parts, 8221 and 5004, that added together give a square (13225 = 115²).

The spelling of 82215004 in words is "eighty-two million, two hundred fifteen thousand, four".