13272391 has 4 divisors (see below), whose sum is σ = 14478984. Its totient is φ = 12065800.

The previous prime is 13272383. The next prime is 13272407. The reversal of 13272391 is 19327231.

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

It is a cyclic number.

It is not a de Polignac number, because 13272391 - 2³ = 13272383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13272331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603280 + ... + 603301.

It is an arithmetic number, because the mean of its divisors is an integer number (3619746).

Almost surely, 2^13272391 is an apocalyptic number.

13272391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13272391 is a deficient number, since it is larger than the sum of its proper divisors (1206593).

13272391 is a wasteful number, since it uses less digits than its factorization.

13272391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206592.

The product of its digits is 2268, while the sum is 28.

The square root of 13272391 is about 3643.1292867534. The cubic root of 13272391 is about 236.7643928439.

The spelling of 13272391 in words is "thirteen million, two hundred seventy-two thousand, three hundred ninety-one".