388389276 has 96 divisors (see below), whose sum is σ = 1163151360. Its totient is φ = 110764800.

The previous prime is 388389251. The next prime is 388389277. The reversal of 388389276 is 672983883.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388389277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10581 + ... + 29811.

It is an arithmetic number, because the mean of its divisors is an integer number (12116160).

Almost surely, 2^388389276 is an apocalyptic number.

388389276 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388389276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581575680).

388389276 is an abundant number, since it is smaller than the sum of its proper divisors (774762084).

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

388389276 is a wasteful number, since it uses less digits than its factorization.

388389276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19272 (or 19264 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 388389276 is about 19707.5943737433. The cubic root of 388389276 is about 729.6071420916.

The spelling of 388389276 in words is "three hundred eighty-eight million, three hundred eighty-nine thousand, two hundred seventy-six".