388650 has 24 divisors (see below), whose sum is σ = 964224. Its totient is φ = 103600.

The previous prime is 388621. The next prime is 388651. The reversal of 388650 is 56883.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388651) by changing a digit.

388650 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1146 + ... + 1445.

It is an arithmetic number, because the mean of its divisors is an integer number (40176).

2³⁸⁸⁶⁵⁰ is an apocalyptic number.

388650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

388650 is an abundant number, since it is smaller than the sum of its proper divisors (575574).

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

388650 is a wasteful number, since it uses less digits than its factorization.

388650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606 (or 2601 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 388650 is about 623.4179978153. The cubic root of 388650 is about 72.9770366254.

The spelling of 388650 in words is "three hundred eighty-eight thousand, six hundred fifty".