13266481 has 4 divisors (see below), whose sum is σ = 13694464. Its totient is φ = 12838500.

The previous prime is 13266479. The next prime is 13266497. The reversal of 13266481 is 18466231.

It is a happy number.

13266481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13266481 - 2¹ = 13266479 is a prime.

It is a super-2 number, since 2×13266481² = 351999036246722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 427951 = 13266481 / (1 + 3 + 2 + 6 + 6 + 4 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13266431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213945 + ... + 214006.

It is an arithmetic number, because the mean of its divisors is an integer number (3423616).

Almost surely, 2^13266481 is an apocalyptic number.

It is an amenable number.

13266481 is a deficient number, since it is larger than the sum of its proper divisors (427983).

13266481 is an equidigital number, since it uses as much as digits as its factorization.

13266481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427982.

The product of its digits is 6912, while the sum is 31.

The square root of 13266481 is about 3642.3180805635. The cubic root of 13266481 is about 236.7292450622.

The spelling of 13266481 in words is "thirteen million, two hundred sixty-six thousand, four hundred eighty-one".