388836 has 36 divisors (see below), whose sum is σ = 1124032. Its totient is φ = 111024.

The previous prime is 388823. The next prime is 388837. The reversal of 388836 is 638883.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 388836.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 388836.

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 11 ways as a sum of consecutive naturals, for example, 520 + ... + 1023.

2³⁸⁸⁸³⁶ is an apocalyptic number.

388836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

388836 is an abundant number, since it is smaller than the sum of its proper divisors (735196).

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

388836 is a wasteful number, since it uses less digits than its factorization.

388836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560 (or 1555 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 388836 is about 623.5671575701. The cubic root of 388836 is about 72.9886765448.

388836 divided by its sum of digits (36) gives a palindrome (10801).

Subtracting 388836 from its reverse (638883), we obtain a cube (250047 = 63³).

The spelling of 388836 in words is "three hundred eighty-eight thousand, eight hundred thirty-six".