13144420 has 24 divisors (see below), whose sum is σ = 27675648. Its totient is φ = 5244000.

The previous prime is 13144393. The next prime is 13144423. The reversal of 13144420 is 2444131.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13144423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10845 + ... + 11995.

It is an arithmetic number, because the mean of its divisors is an integer number (1153152).

Almost surely, 2^13144420 is an apocalyptic number.

13144420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13144420 is an abundant number, since it is smaller than the sum of its proper divisors (14531228).

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

13144420 is a wasteful number, since it uses less digits than its factorization.

13144420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 13144420 is about 3625.5234104885. The cubic root of 13144420 is about 236.0009815146. Note that the first 3 decimals are identical.

Adding to 13144420 its reverse (2444131), we get a palindrome (15588551).

It can be divided in two parts, 131 and 44420, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 13144420 in words is "thirteen million, one hundred forty-four thousand, four hundred twenty".