15225028 has 48 divisors (see below), whose sum is σ = 33128704. Its totient is φ = 5961600.

The previous prime is 15224983. The next prime is 15225031. The reversal of 15225028 is 82052251.

It is a junction number, because it is equal to n+sod(n) for n = 15224993 and 15225011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54826 + ... + 55102.

Almost surely, 2^15225028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15225028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16564352).

15225028 is an abundant number, since it is smaller than the sum of its proper divisors (17903676).

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

15225028 is a wasteful number, since it uses less digits than its factorization.

15225028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 15225028 is about 3901.9261909985. The cubic root of 15225028 is about 247.8483507487.

Adding to 15225028 its reverse (82052251), we get a palindrome (97277279).

The spelling of 15225028 in words is "fifteen million, two hundred twenty-five thousand, twenty-eight".