13240819 has 4 divisors (see below), whose sum is σ = 13272840. Its totient is φ = 13208800.

The previous prime is 13240817. The next prime is 13240837. The reversal of 13240819 is 91804231.

It is a happy number.

13240819 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 an emirpimes, since its reverse is a distinct semiprime: 91804231 = 271 ⋅338761.

It is a cyclic number.

It is not a de Polignac number, because 13240819 - 2¹ = 13240817 is a prime.

It is a super-2 number, since 2×13240819² = 350638575581522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13240817) 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, 15382 + ... + 16219.

It is an arithmetic number, because the mean of its divisors is an integer number (3318210).

Almost surely, 2^13240819 is an apocalyptic number.

13240819 is a deficient number, since it is larger than the sum of its proper divisors (32021).

13240819 is an equidigital number, since it uses as much as digits as its factorization.

13240819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32020.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 13240819 is about 3638.7936187698. The cubic root of 13240819 is about 236.5765075698.

The spelling of 13240819 in words is "thirteen million, two hundred forty thousand, eight hundred nineteen".