128027800 has 24 divisors (see below), whose sum is σ = 297665100. Its totient is φ = 51211040.

The previous prime is 128027797. The next prime is 128027819. The reversal of 128027800 is 8720821.

It is a super-2 number, since 2×128027800² = 32782235145680000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319870 + ... + 320269.

Almost surely, 2^128027800 is an apocalyptic number.

128027800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128027800 is an abundant number, since it is smaller than the sum of its proper divisors (169637300).

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

128027800 is a wasteful number, since it uses less digits than its factorization.

128027800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640155 (or 640146 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 128027800 is about 11314.9370303153. The cubic root of 128027800 is about 504.0049025306.

It can be divided in two parts, 12802 and 7800, that added together give a palindrome (20602).

The spelling of 128027800 in words is "one hundred twenty-eight million, twenty-seven thousand, eight hundred".