13263228 has 36 divisors (see below), whose sum is σ = 36575448. Its totient is φ = 4019040.

The previous prime is 13263227. The next prime is 13263233. The reversal of 13263228 is 82236231.

13263228 is a `hidden beast` number, since 1 + 3 + 2 + 632 + 28 = 666.

13263228 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13263227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16351 + ... + 17142.

Almost surely, 2^13263228 is an apocalyptic number.

13263228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13263228 is an abundant number, since it is smaller than the sum of its proper divisors (23312220).

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

13263228 is a wasteful number, since it uses less digits than its factorization.

13263228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33514 (or 33509 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 13263228 is about 3641.8714969092. The cubic root of 13263228 is about 236.7098944601.

Adding to 13263228 its reverse (82236231), we get a palindrome (95499459).

It can be divided in two parts, 1326 and 3228, that added together give a palindrome (4554).

The spelling of 13263228 in words is "thirteen million, two hundred sixty-three thousand, two hundred twenty-eight".