128936200 has 48 divisors (see below), whose sum is σ = 300823380. Its totient is φ = 51394560.

The previous prime is 128936189. The next prime is 128936219. The reversal of 128936200 is 2639821.

It can be written as a sum of positive squares in 6 ways, for example, as 57668836 + 71267364 = 7594^2 + 8442^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66444 + ... + 68356.

Almost surely, 2^128936200 is an apocalyptic number.

128936200 is a gapful number since it is divisible by the number (10) 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 128936200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150411690).

128936200 is an abundant number, since it is smaller than the sum of its proper divisors (171887180).

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

128936200 is a wasteful number, since it uses less digits than its factorization.

128936200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2257 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 128936200 is about 11355.0077058538. The cubic root of 128936200 is about 505.1941220173.

The spelling of 128936200 in words is "one hundred twenty-eight million, nine hundred thirty-six thousand, two hundred".