15128900 has 18 divisors (see below), whose sum is σ = 32829930. Its totient is φ = 6051520.

The previous prime is 15128887. The next prime is 15128933. The reversal of 15128900 is 982151.

It is a happy number.

15128900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2611456 + 12517444 = 1616^2 + 3538^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15128900.

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, 75545 + ... + 75744.

It is an arithmetic number, because the mean of its divisors is an integer number (1823885).

Almost surely, 2^15128900 is an apocalyptic number.

15128900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15128900 is an abundant number, since it is smaller than the sum of its proper divisors (17701030).

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

15128900 is a wasteful number, since it uses less digits than its factorization.

15128900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151303 (or 151296 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 15128900 is about 3889.5886671986. The cubic root of 15128900 is about 247.3256262487.

The spelling of 15128900 in words is "fifteen million, one hundred twenty-eight thousand, nine hundred".