13203420 has 24 divisors (see below), whose sum is σ = 36969744. Its totient is φ = 3520896.

The previous prime is 13203419. The next prime is 13203431. The reversal of 13203420 is 2430231.

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 13203420.

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, 109969 + ... + 110088.

It is an arithmetic number, because the mean of its divisors is an integer number (1540406).

Almost surely, 2^13203420 is an apocalyptic number.

13203420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13203420 is an abundant number, since it is smaller than the sum of its proper divisors (23766324).

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

13203420 is a wasteful number, since it uses less digits than its factorization.

13203420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220069 (or 220067 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 13203420 is about 3633.6510564445. The cubic root of 13203420 is about 236.3535589213.

Adding to 13203420 its reverse (2430231), we get a palindrome (15633651).

The spelling of 13203420 in words is "thirteen million, two hundred three thousand, four hundred twenty".