388830 has 32 divisors (see below), whose sum is σ = 1005984. Its totient is φ = 95616.

The previous prime is 388823. The next prime is 388837. The reversal of 388830 is 38883.

It is an interprime number because it is at equal distance from previous prime (388823) and next prime (388837).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388837) 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, 109 + ... + 888.

It is an arithmetic number, because the mean of its divisors is an integer number (31437).

2³⁸⁸⁸³⁰ is an apocalyptic number.

388830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 388830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502992).

388830 is an abundant number, since it is smaller than the sum of its proper divisors (617154).

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

388830 is a wasteful number, since it uses less digits than its factorization.

388830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 388830 is about 623.5623465220. The cubic root of 388830 is about 72.9883011214.

The spelling of 388830 in words is "three hundred eighty-eight thousand, eight hundred thirty".