82389790 has 32 divisors (see below), whose sum is σ = 170127360. Its totient is φ = 28141344.

The previous prime is 82389779. The next prime is 82389793. The reversal of 82389790 is 9798328.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 82389790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82389793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17731 + ... + 21889.

It is an arithmetic number, because the mean of its divisors is an integer number (5316480).

Almost surely, 2^82389790 is an apocalyptic number.

82389790 is an abundant number, since it is smaller than the sum of its proper divisors (87737570).

82389790 is a wasteful number, since it uses less digits than its factorization.

82389790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 82389790 is about 9076.8821739626. The cubic root of 82389790 is about 435.1354490781.

The spelling of 82389790 in words is "eighty-two million, three hundred eighty-nine thousand, seven hundred ninety".