13421244 has 12 divisors (see below), whose sum is σ = 31316264. Its totient is φ = 4473744.

The previous prime is 13421207. The next prime is 13421251. The reversal of 13421244 is 44212431.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 13421244.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559207 + ... + 559230.

Almost surely, 2^13421244 is an apocalyptic number.

It is an amenable number.

13421244 is an abundant number, since it is smaller than the sum of its proper divisors (17895020).

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

13421244 is a wasteful number, since it uses less digits than its factorization.

13421244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118444 (or 1118442 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 13421244 is about 3663.5016036574. The cubic root of 13421244 is about 237.6462272172.

Adding to 13421244 its reverse (44212431), we get a palindrome (57633675).

The spelling of 13421244 in words is "thirteen million, four hundred twenty-one thousand, two hundred forty-four".