82819388 has 12 divisors (see below), whose sum is σ = 145686240. Its totient is φ = 41194752.

The previous prime is 82819339. The next prime is 82819403. The reversal of 82819388 is 88391828.

It is a congruent number.

It is an unprimeable number.

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, 52868 + ... + 54411.

It is an arithmetic number, because the mean of its divisors is an integer number (12140520).

Almost surely, 2^82819388 is an apocalyptic number.

It is an amenable number.

82819388 is a deficient number, since it is larger than the sum of its proper divisors (62866852).

82819388 is a wasteful number, since it uses less digits than its factorization.

82819388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107476 (or 107474 counting only the distinct ones).

The product of its digits is 221184, while the sum is 47.

The square root of 82819388 is about 9100.5158095572. The cubic root of 82819388 is about 435.8904348319.

The spelling of 82819388 in words is "eighty-two million, eight hundred nineteen thousand, three hundred eighty-eight".