13433520 has 80 divisors (see below), whose sum is σ = 41997312. Its totient is φ = 3552000.

The previous prime is 13433507. The next prime is 13433531. The reversal of 13433520 is 2533431.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53395 + ... + 53645.

Almost surely, 2^13433520 is an apocalyptic number.

13433520 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 13433520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20998656).

13433520 is an abundant number, since it is smaller than the sum of its proper divisors (28563792).

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

13433520 is a wasteful number, since it uses less digits than its factorization.

13433520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 13433520 is about 3665.1766669562. The cubic root of 13433520 is about 237.7186610410.

Adding to 13433520 its reverse (2533431), we get a palindrome (15966951).

The spelling of 13433520 in words is "thirteen million, four hundred thirty-three thousand, five hundred twenty".