13420544 has 24 divisors (see below), whose sum is σ = 26838630. Its totient is φ = 6709248.

The previous prime is 13420541. The next prime is 13420573. The reversal of 13420544 is 44502431.

It can be written as a sum of positive squares in only one way, i.e., 12166144 + 1254400 = 3488^2 + 1120^2 .

It is a super-2 number, since 2×13420544² = 360222002511872, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13420541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1229 + ... + 5324.

Almost surely, 2^13420544 is an apocalyptic number.

It is an amenable number.

13420544 is a deficient number, since it is larger than the sum of its proper divisors (13418086).

13420544 is an frugal number, since it uses more digits than its factorization.

13420544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575 (or 6555 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 13420544 is about 3663.4060653987. The cubic root of 13420544 is about 237.6420955771.

Adding to 13420544 its reverse (44502431), we get a palindrome (57922975).

The spelling of 13420544 in words is "thirteen million, four hundred twenty thousand, five hundred forty-four".