13403520 has 192 divisors, whose sum is σ = 50122800. Its totient is φ = 3280896.

The previous prime is 13403519. The next prime is 13403567. The reversal of 13403520 is 2530431.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13403493 and 13403502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74791 + ... + 74969.

Almost surely, 2^13403520 is an apocalyptic number.

13403520 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 13403520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25061400).

13403520 is an abundant number, since it is smaller than the sum of its proper divisors (36719280).

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

13403520 is a wasteful number, since it uses less digits than its factorization.

13403520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 13403520 is about 3661.0818073351. The cubic root of 13403520 is about 237.5415698242.

Adding to 13403520 its reverse (2530431), we get a palindrome (15933951).

The spelling of 13403520 in words is "thirteen million, four hundred three thousand, five hundred twenty".