13420044 has 36 divisors (see below), whose sum is σ = 37007880. Its totient is φ = 4066560.

The previous prime is 13420037. The next prime is 13420049. The reversal of 13420044 is 44002431.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 13419999 and 13420026.

It is not an unprimeable number, because it can be changed into a prime (13420049) 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, 16549 + ... + 17340.

Almost surely, 2^13420044 is an apocalyptic number.

It is an amenable number.

13420044 is an abundant number, since it is smaller than the sum of its proper divisors (23587836).

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

13420044 is a wasteful number, since it uses less digits than its factorization.

13420044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33910 (or 33905 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 13420044 is about 3663.3378222599. The cubic root of 13420044 is about 237.6391443176.

Adding to 13420044 its reverse (44002431), we get a palindrome (57422475).

The spelling of 13420044 in words is "thirteen million, four hundred twenty thousand, forty-four".