128340200 has 24 divisors (see below), whose sum is σ = 298391430. Its totient is φ = 51336000.

The previous prime is 128340151. The next prime is 128340211. The reversal of 128340200 is 2043821.

It can be written as a sum of positive squares in 3 ways, for example, as 125305636 + 3034564 = 11194^2 + 1742^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320651 + ... + 321050.

Almost surely, 2^128340200 is an apocalyptic number.

128340200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128340200 is an abundant number, since it is smaller than the sum of its proper divisors (170051230).

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

128340200 is a wasteful number, since it uses less digits than its factorization.

128340200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641717 (or 641708 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 128340200 is about 11328.7333802151. The cubic root of 128340200 is about 504.4145095057.

The spelling of 128340200 in words is "one hundred twenty-eight million, three hundred forty thousand, two hundred".