82388774 has 16 divisors (see below), whose sum is σ = 136186512. Its totient is φ = 37140768.

The previous prime is 82388759. The next prime is 82388777. The reversal of 82388774 is 47788328.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82388777) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 35729 + ... + 37964.

It is an arithmetic number, because the mean of its divisors is an integer number (8511657).

Almost surely, 2^82388774 is an apocalyptic number.

82388774 is a deficient number, since it is larger than the sum of its proper divisors (53797738).

82388774 is a wasteful number, since it uses less digits than its factorization.

82388774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73751.

The product of its digits is 602112, while the sum is 47.

The square root of 82388774 is about 9076.8262074362. The cubic root of 82388774 is about 435.1336604283.

The spelling of 82388774 in words is "eighty-two million, three hundred eighty-eight thousand, seven hundred seventy-four".