13407228 has 48 divisors (see below), whose sum is σ = 35580160. Its totient is φ = 4363632.

The previous prime is 13407197. The next prime is 13407241. The reversal of 13407228 is 82270431.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 3201 + ... + 6087.

Almost surely, 2^13407228 is an apocalyptic number.

13407228 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 13407228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17790080).

13407228 is an abundant number, since it is smaller than the sum of its proper divisors (22172932).

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

13407228 is a wasteful number, since it uses less digits than its factorization.

13407228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943 (or 2935 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 13407228 is about 3661.5881800115. The cubic root of 13407228 is about 237.5634726013.

Adding to 13407228 its reverse (82270431), we get a palindrome (95677659).

The spelling of 13407228 in words is "thirteen million, four hundred seven thousand, two hundred twenty-eight".