13820044 has 12 divisors (see below), whose sum is σ = 27640144. Its totient is φ = 5922864.

The previous prime is 13820041. The next prime is 13820047. The reversal of 13820044 is 44002831.

It is an interprime number because it is at equal distance from previous prime (13820041) and next prime (13820047).

13820044 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13819997 and 13820024.

It is not an unprimeable number, because it can be changed into a prime (13820041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246759 + ... + 246814.

Almost surely, 2^13820044 is an apocalyptic number.

13820044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13820044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13820044 is a wasteful number, since it uses less digits than its factorization.

13820044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493584 (or 493582 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 13820044 is about 3717.5319769976. The cubic root of 13820044 is about 239.9771042973.

Adding to 13820044 its reverse (44002831), we get a palindrome (57822875).

The spelling of 13820044 in words is "thirteen million, eight hundred twenty thousand, forty-four".