13233144 has 16 divisors (see below), whose sum is σ = 33082920. Its totient is φ = 4411040.

The previous prime is 13233127. The next prime is 13233149. The reversal of 13233144 is 44133231.

It is a super-2 number, since 2×13233144² = 350232200249472, which contains 22 as substring.

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 13233144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13233149) 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, 275667 + ... + 275714.

Almost surely, 2^13233144 is an apocalyptic number.

It is an amenable number.

13233144 is an abundant number, since it is smaller than the sum of its proper divisors (19849776).

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

13233144 is a wasteful number, since it uses less digits than its factorization.

13233144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551390 (or 551386 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 13233144 is about 3637.7388581370. The cubic root of 13233144 is about 236.5307884534.

Adding to 13233144 its reverse (44133231), we get a palindrome (57366375).

The spelling of 13233144 in words is "thirteen million, two hundred thirty-three thousand, one hundred forty-four".