388020 has 48 divisors (see below), whose sum is σ = 1128960. Its totient is φ = 99456.

The previous prime is 388009. The next prime is 388051. The reversal of 388020 is 20883.

It is a congruent number.

It is an unprimeable number.

388020 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1629 + ... + 1851.

It is an arithmetic number, because the mean of its divisors is an integer number (23520).

2³⁸⁸⁰²⁰ is an apocalyptic number.

388020 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 388020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564480).

388020 is an abundant number, since it is smaller than the sum of its proper divisors (740940).

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

388020 is a wasteful number, since it uses less digits than its factorization.

388020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 388020 is about 622.9125139215. The cubic root of 388020 is about 72.9375834777.

The spelling of 388020 in words is "three hundred eighty-eight thousand, twenty".