388140 has 24 divisors (see below), whose sum is σ = 1086960. Its totient is φ = 103488.

The previous prime is 388133. The next prime is 388159. The reversal of 388140 is 41883.

388140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 388140.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 388140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3175 + ... + 3294.

It is an arithmetic number, because the mean of its divisors is an integer number (45290).

2³⁸⁸¹⁴⁰ is an apocalyptic number.

388140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

388140 is an abundant number, since it is smaller than the sum of its proper divisors (698820).

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

388140 is a wasteful number, since it uses less digits than its factorization.

388140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481 (or 6479 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 388140 is about 623.0088281879. The cubic root of 388140 is about 72.9451016537.

It can be divided in two parts, 388 and 140, that added together give a triangular number (528 = T₃₂).

The spelling of 388140 in words is "three hundred eighty-eight thousand, one hundred forty".