13125228 has 24 divisors (see below), whose sum is σ = 30738288. Its totient is φ = 4358976.

The previous prime is 13125223. The next prime is 13125251. The reversal of 13125228 is 82252131.

It is a super-2 number, since 2×13125228² = 344543220103968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13125198 and 13125207.

It is not an unprimeable number, because it can be changed into a prime (13125223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1650 + ... + 5382.

It is an arithmetic number, because the mean of its divisors is an integer number (1280762).

Almost surely, 2^13125228 is an apocalyptic number.

It is an amenable number.

13125228 is an abundant number, since it is smaller than the sum of its proper divisors (17613060).

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

13125228 is a wasteful number, since it uses less digits than its factorization.

13125228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033 (or 4031 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 13125228 is about 3622.8756534002. The cubic root of 13125228 is about 235.8860648927.

Adding to 13125228 its reverse (82252131), we get a palindrome (95377359).

The spelling of 13125228 in words is "thirteen million, one hundred twenty-five thousand, two hundred twenty-eight".