388231500 has 96 divisors (see below), whose sum is σ = 1147700736. Its totient is φ = 101956800.

The previous prime is 388231483. The next prime is 388231531. The reversal of 388231500 is 5132883.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98569 + ... + 102431.

It is an arithmetic number, because the mean of its divisors is an integer number (11955216).

Almost surely, 2^388231500 is an apocalyptic number.

388231500 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 388231500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573850368).

388231500 is an abundant number, since it is smaller than the sum of its proper divisors (759469236).

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

388231500 is a wasteful number, since it uses less digits than its factorization.

388231500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3952 (or 3940 counting only the distinct ones).

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

The square root of 388231500 is about 19703.5910432591. The cubic root of 388231500 is about 729.5083322164.

The spelling of 388231500 in words is "three hundred eighty-eight million, two hundred thirty-one thousand, five hundred".