82908215 has 16 divisors (see below), whose sum is σ = 111803328. Its totient is φ = 58561536.

The previous prime is 82908193. The next prime is 82908227. The reversal of 82908215 is 51280928.

It is a cyclic number.

It is not a de Polignac number, because 82908215 - 2⁶ = 82908151 is a prime.

It is a super-2 number, since 2×82908215² = 13747544228972450, 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26234 + ... + 29223.

It is an arithmetic number, because the mean of its divisors is an integer number (6987708).

Almost surely, 2^82908215 is an apocalyptic number.

82908215 is a deficient number, since it is larger than the sum of its proper divisors (28895113).

82908215 is a wasteful number, since it uses less digits than its factorization.

82908215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55498.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 82908215 is about 9105.3948294404. The cubic root of 82908215 is about 436.0462156071.

The spelling of 82908215 in words is "eighty-two million, nine hundred eight thousand, two hundred fifteen".