15045728 has 12 divisors (see below), whose sum is σ = 29621340. Its totient is φ = 7522848.

The previous prime is 15045707. The next prime is 15045733. The reversal of 15045728 is 82754051.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 470179 = 15045728 / (1 + 5 + 0 + 4 + 5 + 7 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 15045694 and 15045703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235058 + ... + 235121.

It is an arithmetic number, because the mean of its divisors is an integer number (2468445).

Almost surely, 2^15045728 is an apocalyptic number.

It is an amenable number.

15045728 is a deficient number, since it is larger than the sum of its proper divisors (14575612).

15045728 is an equidigital number, since it uses as much as digits as its factorization.

15045728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470189 (or 470181 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 15045728 is about 3878.8823132444. The cubic root of 15045728 is about 246.8715641887.

Adding to 15045728 its reverse (82754051), we get a palindrome (97799779).

The spelling of 15045728 in words is "fifteen million, forty-five thousand, seven hundred twenty-eight".