388828380 has 48 divisors (see below), whose sum is σ = 1099959840. Its totient is φ = 102617088.

The previous prime is 388828373. The next prime is 388828387. The reversal of 388828380 is 83828883.

It is an interprime number because it is at equal distance from previous prime (388828373) and next prime (388828387).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388828387) 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, 27585 + ... + 39224.

It is an arithmetic number, because the mean of its divisors is an integer number (22915830).

Almost surely, 2^388828380 is an apocalyptic number.

388828380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

388828380 is an abundant number, since it is smaller than the sum of its proper divisors (711131460).

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

388828380 is a wasteful number, since it uses less digits than its factorization.

388828380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66918 (or 66916 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 48.

The square root of 388828380 is about 19718.7317036365. The cubic root of 388828380 is about 729.8819975648.

The spelling of 388828380 in words is "three hundred eighty-eight million, eight hundred twenty-eight thousand, three hundred eighty".