13406273 has 4 divisors (see below), whose sum is σ = 13544580. Its totient is φ = 13267968.

The previous prime is 13406269. The next prime is 13406279. The reversal of 13406273 is 37260431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5071504 + 8334769 = 2252^2 + 2887^2 .

It is a cyclic number.

It is not a de Polignac number, because 13406273 - 2² = 13406269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13406279) 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, 69008 + ... + 69201.

It is an arithmetic number, because the mean of its divisors is an integer number (3386145).

Almost surely, 2^13406273 is an apocalyptic number.

It is an amenable number.

13406273 is a deficient number, since it is larger than the sum of its proper divisors (138307).

13406273 is an equidigital number, since it uses as much as digits as its factorization.

13406273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138306.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 13406273 is about 3661.4577697961. The cubic root of 13406273 is about 237.5578319000.

The spelling of 13406273 in words is "thirteen million, four hundred six thousand, two hundred seventy-three".