388278674 has 32 divisors (see below), whose sum is σ = 709067520. Its totient is φ = 155662848.

The previous prime is 388278647. The next prime is 388278679. The reversal of 388278674 is 476872883.

It is not an unprimeable number, because it can be changed into a prime (388278679) 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 15 ways as a sum of consecutive naturals, for example, 34862 + ... + 44630.

It is an arithmetic number, because the mean of its divisors is an integer number (22158360).

Almost surely, 2^388278674 is an apocalyptic number.

388278674 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

388278674 is a deficient number, since it is larger than the sum of its proper divisors (320788846).

388278674 is a wasteful number, since it uses less digits than its factorization.

388278674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9962.

The product of its digits is 3612672, while the sum is 53.

The square root of 388278674 is about 19704.7880983278. The cubic root of 388278674 is about 729.5378785329.

The spelling of 388278674 in words is "three hundred eighty-eight million, two hundred seventy-eight thousand, six hundred seventy-four".