15228128 has 12 divisors (see below), whose sum is σ = 29980440. Its totient is φ = 7614048.

The previous prime is 15228113. The next prime is 15228131. The reversal of 15228128 is 82182251.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15228128.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237908 + ... + 237971.

It is an arithmetic number, because the mean of its divisors is an integer number (2498370).

Almost surely, 2^15228128 is an apocalyptic number.

It is an amenable number.

15228128 is a deficient number, since it is larger than the sum of its proper divisors (14752312).

15228128 is an equidigital number, since it uses as much as digits as its factorization.

15228128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475889 (or 475881 counting only the distinct ones).

The product of its digits is 2560, while the sum is 29.

The square root of 15228128 is about 3902.3234104825. The cubic root of 15228128 is about 247.8651712486.

The spelling of 15228128 in words is "fifteen million, two hundred twenty-eight thousand, one hundred twenty-eight".