13332644 has 24 divisors (see below), whose sum is σ = 25360440. Its totient is φ = 6096384.

The previous prime is 13332637. The next prime is 13332653. The reversal of 13332644 is 44623331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2190400 + 11142244 = 1480^2 + 3338^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4742 + ... + 7010.

It is an arithmetic number, because the mean of its divisors is an integer number (1056685).

Almost surely, 2^13332644 is an apocalyptic number.

It is an amenable number.

13332644 is a deficient number, since it is larger than the sum of its proper divisors (12027796).

13332644 is a wasteful number, since it uses less digits than its factorization.

13332644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399 (or 2397 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

The square root of 13332644 is about 3651.3893246270. The cubic root of 13332644 is about 237.1221337537.

Adding to 13332644 its reverse (44623331), we get a palindrome (57955975).

The spelling of 13332644 in words is "thirteen million, three hundred thirty-two thousand, six hundred forty-four".