388090000 has 75 divisors (see below), whose sum is σ = 944398477. Its totient is φ = 154448000.

The previous prime is 388089983. The next prime is 388090013. The reversal of 388090000 is 90883.

The square root of 388090000 is 19700.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 66389904 + 321700096 = 8148^2 + 17936^2 .

It is a super-2 number, since 2×388090000² = 301227696200000000, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable 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 14 ways as a sum of consecutive naturals, for example, 1969902 + ... + 1970098.

Almost surely, 2^388090000 is an apocalyptic number.

388090000 is the 19700-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388090000

388090000 is an abundant number, since it is smaller than the sum of its proper divisors (556308477).

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

388090000 is an frugal number, since it uses more digits than its factorization.

388090000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The cubic root of 388090000 is about 729.4196926869.

The spelling of 388090000 in words is "three hundred eighty-eight million, ninety thousand".