13203040 has 48 divisors (see below), whose sum is σ = 31434480. Its totient is φ = 5240320.

The previous prime is 13203031. The next prime is 13203083. The reversal of 13203040 is 4030231.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 13203040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28410 + ... + 28870.

It is an arithmetic number, because the mean of its divisors is an integer number (654885).

Almost surely, 2^13203040 is an apocalyptic number.

13203040 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 13203040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15717240).

13203040 is an abundant number, since it is smaller than the sum of its proper divisors (18231440).

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

13203040 is a wasteful number, since it uses less digits than its factorization.

13203040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13203040 is about 3633.5987670628. The cubic root of 13203040 is about 236.3512914478.

Adding to 13203040 its reverse (4030231), we get a palindrome (17233271).

The spelling of 13203040 in words is "thirteen million, two hundred three thousand, forty".