13033320 has 64 divisors (see below), whose sum is σ = 39337920. Its totient is φ = 3454464.

The previous prime is 13033289. The next prime is 13033327. The reversal of 13033320 is 2333031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13033320.

It is not an unprimeable number, because it can be changed into a prime (13033327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37387 + ... + 37733.

It is an arithmetic number, because the mean of its divisors is an integer number (614655).

Almost surely, 2^13033320 is an apocalyptic number.

13033320 is a gapful number since it is divisible by the number (10) 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 13033320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19668960).

13033320 is an abundant number, since it is smaller than the sum of its proper divisors (26304600).

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

13033320 is a wasteful number, since it uses less digits than its factorization.

13033320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 13033320 is about 3610.1689711148. The cubic root of 13033320 is about 235.3341857745.

Adding to 13033320 its reverse (2333031), we get a palindrome (15366351).

The spelling of 13033320 in words is "thirteen million, thirty-three thousand, three hundred twenty".