13163328 has 42 divisors (see below), whose sum is σ = 37731954. Its totient is φ = 4387584.

The previous prime is 13163323. The next prime is 13163347. The reversal of 13163328 is 82336131.

It is a happy number.

13163328 is a `hidden beast` number, since 1 + 3 + 1 + 633 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9290304 + 3873024 = 3048^2 + 1968^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13163323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10851 + ... + 12002.

Almost surely, 2^13163328 is an apocalyptic number.

13163328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13163328 is an abundant number, since it is smaller than the sum of its proper divisors (24568626).

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

13163328 is a wasteful number, since it uses less digits than its factorization.

13163328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22871 (or 22858 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 13163328 is about 3628.1300968956. The cubic root of 13163328 is about 236.1140882834.

Adding to 13163328 its reverse (82336131), we get a palindrome (95499459).

The spelling of 13163328 in words is "thirteen million, one hundred sixty-three thousand, three hundred twenty-eight".