13231764 has 108 divisors (see below), whose sum is σ = 41973204. Its totient is φ = 3483648.

The previous prime is 13231741. The next prime is 13231781. The reversal of 13231764 is 46713231.

13231764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8643600 + 4588164 = 2940^2 + 2142^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22644 + ... + 23220.

Almost surely, 2^13231764 is an apocalyptic number.

13231764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13231764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20986602).

13231764 is an abundant number, since it is smaller than the sum of its proper divisors (28741440).

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

13231764 is a wasteful number, since it uses less digits than its factorization.

13231764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 602 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 13231764 is about 3637.5491749253. The cubic root of 13231764 is about 236.5225660729.

Adding to 13231764 its reverse (46713231), we get a palindrome (59944995).

The spelling of 13231764 in words is "thirteen million, two hundred thirty-one thousand, seven hundred sixty-four".