128900252 has 24 divisors (see below), whose sum is σ = 244179936. Its totient is φ = 59185728.

The previous prime is 128900251. The next prime is 128900323. The reversal of 128900252 is 252009821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128900251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3953 + ... + 16535.

It is an arithmetic number, because the mean of its divisors is an integer number (10174164).

Almost surely, 2^128900252 is an apocalyptic number.

It is an amenable number.

128900252 is a deficient number, since it is larger than the sum of its proper divisors (115279684).

128900252 is a wasteful number, since it uses less digits than its factorization.

128900252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12797 (or 12795 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 128900252 is about 11353.4246815664. The cubic root of 128900252 is about 505.1471675124.

The spelling of 128900252 in words is "one hundred twenty-eight million, nine hundred thousand, two hundred fifty-two".