13214540 has 12 divisors (see below), whose sum is σ = 27750576. Its totient is φ = 5285808.

The previous prime is 13214527. The next prime is 13214561. The reversal of 13214540 is 4541231.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 660727 = 13214540 / (1 + 3 + 2 + 1 + 4 + 5 + 4 + 0).

It is an unprimeable number.

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, 330344 + ... + 330383.

It is an arithmetic number, because the mean of its divisors is an integer number (2312548).

Almost surely, 2^13214540 is an apocalyptic number.

13214540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13214540 is an abundant number, since it is smaller than the sum of its proper divisors (14536036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13214540 is a wasteful number, since it uses less digits than its factorization.

13214540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660736 (or 660734 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 13214540 is about 3635.1808758300. The cubic root of 13214540 is about 236.4198931003.

Adding to 13214540 its reverse (4541231), we get a palindrome (17755771).

The spelling of 13214540 in words is "thirteen million, two hundred fourteen thousand, five hundred forty".