388430 has 32 divisors (see below), whose sum is σ = 829440. Its totient is φ = 128160.

The previous prime is 388403. The next prime is 388459. The reversal of 388430 is 34883.

388430 = T₂₈ + T₂₉ + ... + T₁₃₂.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 388430.

It is a congruent number.

It is an unprimeable number.

388430 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, 2081 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (25920).

2³⁸⁸⁴³⁰ is an apocalyptic number.

388430 is an abundant number, since it is smaller than the sum of its proper divisors (441010).

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

388430 is a wasteful number, since it uses less digits than its factorization.

388430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 388430 is about 623.2415262160. The cubic root of 388430 is about 72.9632641837.

It can be divided in two parts, 388 and 430, that added together give a palindrome (818).

The spelling of 388430 in words is "three hundred eighty-eight thousand, four hundred thirty".