82215124 has 6 divisors (see below), whose sum is σ = 143876474. Its totient is φ = 41107560.

The previous prime is 82215053. The next prime is 82215139. The reversal of 82215124 is 42151228.

It can be written as a sum of positive squares in only one way, i.e., 62252100 + 19963024 = 7890^2 + 4468^2 .

It is a super-2 number, since 2×82215124² = 13518653228670752, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 10276887 + ... + 10276894.

Almost surely, 2^82215124 is an apocalyptic number.

It is an amenable number.

82215124 is a deficient number, since it is larger than the sum of its proper divisors (61661350).

82215124 is a wasteful number, since it uses less digits than its factorization.

82215124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20553785 (or 20553783 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 82215124 is about 9067.2555936182. The cubic root of 82215124 is about 434.8277364330.

The spelling of 82215124 in words is "eighty-two million, two hundred fifteen thousand, one hundred twenty-four".