13832821 has 12 divisors (see below), whose sum is σ = 14687680. Its totient is φ = 13024440.

The previous prime is 13832809. The next prime is 13832831. The reversal of 13832821 is 12823831.

13832821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13832821 - 2⁹ = 13832309 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13832821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13832831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41626 + ... + 41956.

Almost surely, 2^13832821 is an apocalyptic number.

It is an amenable number.

13832821 is a deficient number, since it is larger than the sum of its proper divisors (854859).

13832821 is an equidigital number, since it uses as much as digits as its factorization.

13832821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 433 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 13832821 is about 3719.2500588156. The cubic root of 13832821 is about 240.0510365999.

The spelling of 13832821 in words is "thirteen million, eight hundred thirty-two thousand, eight hundred twenty-one".