13203320 has 32 divisors (see below), whose sum is σ = 31993920. Its totient is φ = 4874880.

The previous prime is 13203319. The next prime is 13203361. The reversal of 13203320 is 2330231.

13203320 = T₄₅₁ + T₄₅₂ + ... + T₅₅₄.

It is a junction number, because it is equal to n+sod(n) for n = 13203295 and 13203304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12176 + ... + 13215.

It is an arithmetic number, because the mean of its divisors is an integer number (999810).

Almost surely, 2^13203320 is an apocalyptic number.

13203320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13203320 is an abundant number, since it is smaller than the sum of its proper divisors (18790600).

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

13203320 is a wasteful number, since it uses less digits than its factorization.

13203320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25415 (or 25411 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 13203320 is about 3633.6372961538. The cubic root of 13203320 is about 236.3529622219.

Adding to 13203320 its reverse (2330231), we get a palindrome (15533551).

The spelling of 13203320 in words is "thirteen million, two hundred three thousand, three hundred twenty".