15000228 has 60 divisors (see below), whose sum is σ = 39856432. Its totient is φ = 4918320.

The previous prime is 15000211. The next prime is 15000233. The reversal of 15000228 is 82200051.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 15000228.

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 in 19 ways as a sum of consecutive naturals, for example, 21363 + ... + 22053.

Almost surely, 2^15000228 is an apocalyptic number.

15000228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15000228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19928216).

15000228 is an abundant number, since it is smaller than the sum of its proper divisors (24856204).

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

15000228 is a wasteful number, since it uses less digits than its factorization.

15000228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 15000228 is about 3873.0127807690. The cubic root of 15000228 is about 246.6224569742.

Adding to 15000228 its reverse (82200051), we get a palindrome (97200279).

The spelling of 15000228 in words is "fifteen million, two hundred twenty-eight", and thus it is an aban number.