13540219 has 12 divisors (see below), whose sum is σ = 17183448. Its totient is φ = 10550400.

The previous prime is 13540207. The next prime is 13540223. The reversal of 13540219 is 91204531.

It is not a de Polignac number, because 13540219 - 2⁷ = 13540091 is a prime.

It is a super-2 number, since 2×13540219² = 366675061135922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13540193 and 13540202.

It is not an unprimeable number, because it can be changed into a prime (13540229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12022 + ... + 13099.

It is an arithmetic number, because the mean of its divisors is an integer number (1431954).

Almost surely, 2^13540219 is an apocalyptic number.

13540219 is a deficient number, since it is larger than the sum of its proper divisors (3643229).

13540219 is a wasteful number, since it uses less digits than its factorization.

13540219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25146 (or 25139 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 13540219 is about 3679.7036565463. The cubic root of 13540219 is about 238.3463814505.

The spelling of 13540219 in words is "thirteen million, five hundred forty thousand, two hundred nineteen".