388680 has 64 divisors (see below), whose sum is σ = 1209600. Its totient is φ = 99840.

The previous prime is 388673. The next prime is 388691. The reversal of 388680 is 86883.

388680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4881 + ... + 4959.

It is an arithmetic number, because the mean of its divisors is an integer number (18900).

2³⁸⁸⁶⁸⁰ is an apocalyptic number.

388680 is a gapful number since it is divisible by the number (30) 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 388680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604800).

388680 is an abundant number, since it is smaller than the sum of its proper divisors (820920).

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

388680 is a wasteful number, since it uses less digits than its factorization.

388680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 388680 is about 623.4420582540. The cubic root of 388680 is about 72.9789142829.

The spelling of 388680 in words is "three hundred eighty-eight thousand, six hundred eighty".