13228481 has 8 divisors (see below), whose sum is σ = 15427200. Its totient is φ = 11338404.

The previous prime is 13228441. The next prime is 13228487. The reversal of 13228481 is 18482231.

13228481 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13228481 - 2⁶ = 13228417 is a prime.

It is a super-2 number, since 2×13228481² = 349985419134722, which contains 22 as substring.

It is a Duffinian number.

13228481 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13228487) 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, 18941 + ... + 19626.

It is an arithmetic number, because the mean of its divisors is an integer number (1928400).

Almost surely, 2^13228481 is an apocalyptic number.

It is an amenable number.

13228481 is a deficient number, since it is larger than the sum of its proper divisors (2198719).

13228481 is an frugal number, since it uses more digits than its factorization.

13228481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38588 (or 38574 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 13228481 is about 3637.0978815534. The cubic root of 13228481 is about 236.5030028508.

The spelling of 13228481 in words is "thirteen million, two hundred twenty-eight thousand, four hundred eighty-one".