15028228 has 12 divisors (see below), whose sum is σ = 26339292. Its totient is φ = 7502720.

The previous prime is 15028219. The next prime is 15028231. The reversal of 15028228 is 82282051.

It can be written as a sum of positive squares in 2 ways, for example, as 2125764 + 12902464 = 1458^2 + 3592^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15028196 and 15028205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576 + ... + 5512.

It is an arithmetic number, because the mean of its divisors is an integer number (2194941).

Almost surely, 2^15028228 is an apocalyptic number.

It is an amenable number.

15028228 is a deficient number, since it is larger than the sum of its proper divisors (11311064).

15028228 is a wasteful number, since it uses less digits than its factorization.

15028228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702 (or 5700 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 15028228 is about 3876.6258524650. The cubic root of 15028228 is about 246.7758132343.

It can be divided in two parts, 1502 and 8228, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 15028228 in words is "fifteen million, twenty-eight thousand, two hundred twenty-eight".