13263144 has 32 divisors (see below), whose sum is σ = 33786720. Its totient is φ = 4337216.

The previous prime is 13263143. The next prime is 13263167. The reversal of 13263144 is 44136231.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is not an unprimeable number, because it can be changed into a prime (13263143) 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, 3942 + ... + 6485.

It is an arithmetic number, because the mean of its divisors is an integer number (1055835).

Almost surely, 2^13263144 is an apocalyptic number.

It is an amenable number.

13263144 is an abundant number, since it is smaller than the sum of its proper divisors (20523576).

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

13263144 is a wasteful number, since it uses less digits than its factorization.

13263144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10489 (or 10485 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 13263144 is about 3641.8599643589. The cubic root of 13263144 is about 236.7093947408.

Adding to 13263144 its reverse (44136231), we get a palindrome (57399375).

The spelling of 13263144 in words is "thirteen million, two hundred sixty-three thousand, one hundred forty-four".