82389378 has 32 divisors (see below), whose sum is σ = 175426560. Its totient is φ = 25706240.

The previous prime is 82389371. The next prime is 82389379. The reversal of 82389378 is 87398328.

It is not an unprimeable number, because it can be changed into a prime (82389371) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17368 + ... + 21596.

It is an arithmetic number, because the mean of its divisors is an integer number (5482080).

Almost surely, 2^82389378 is an apocalyptic number.

82389378 is an abundant number, since it is smaller than the sum of its proper divisors (93037182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82389378 is a wasteful number, since it uses less digits than its factorization.

82389378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442.

The product of its digits is 580608, while the sum is 48.

The square root of 82389378 is about 9076.8594789167. The cubic root of 82389378 is about 435.1347237612.

The spelling of 82389378 in words is "eighty-two million, three hundred eighty-nine thousand, three hundred seventy-eight".