188256768 has 80 divisors (see below), whose sum is σ = 573207360. Its totient is φ = 53784576.

The previous prime is 188256749. The next prime is 188256773. The reversal of 188256768 is 867652881.

It is a super-2 number, since 2×188256768² = 70881221395611648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 188256768.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1998 + ... + 19506.

It is an arithmetic number, because the mean of its divisors is an integer number (7165092).

Almost surely, 2^188256768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188256768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286603680).

188256768 is an abundant number, since it is smaller than the sum of its proper divisors (384950592).

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

188256768 is an equidigital number, since it uses as much as digits as its factorization.

188256768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17537 (or 17521 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 188256768 is about 13720.6693714265. The cubic root of 188256768 is about 573.1261170517.

The spelling of 188256768 in words is "one hundred eighty-eight million, two hundred fifty-six thousand, seven hundred sixty-eight".