13233820 has 24 divisors (see below), whose sum is σ = 29426544. Its totient is φ = 4982016.

The previous prime is 13233811. The next prime is 13233833. The reversal of 13233820 is 2833231.

It is a happy number.

13233820 is nontrivially palindromic in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 13233791 and 13233800.

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, 19122 + ... + 19801.

It is an arithmetic number, because the mean of its divisors is an integer number (1226106).

Almost surely, 2^13233820 is an apocalyptic number.

13233820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13233820 is an abundant number, since it is smaller than the sum of its proper divisors (16192724).

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

13233820 is a wasteful number, since it uses less digits than its factorization.

13233820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38949 (or 38947 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 13233820 is about 3637.8317718113. The cubic root of 13233820 is about 236.5348160196.

The spelling of 13233820 in words is "thirteen million, two hundred thirty-three thousand, eight hundred twenty".