13021332 has 12 divisors (see below), whose sum is σ = 30383136. Its totient is φ = 4340440.

The previous prime is 13021331. The next prime is 13021357. The reversal of 13021332 is 23312031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021331) 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, 542544 + ... + 542567.

It is an arithmetic number, because the mean of its divisors is an integer number (2531928).

Almost surely, 2^13021332 is an apocalyptic number.

13021332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13021332 is an abundant number, since it is smaller than the sum of its proper divisors (17361804).

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

13021332 is a wasteful number, since it uses less digits than its factorization.

13021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085118 (or 1085116 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13021332 is about 3608.5082790538. The cubic root of 13021332 is about 235.2620104670.

Adding to 13021332 its reverse (23312031), we get a palindrome (36333363).

The spelling of 13021332 in words is "thirteen million, twenty-one thousand, three hundred thirty-two".