13669824 has 84 divisors (see below), whose sum is σ = 42102024. Its totient is φ = 3902976.

The previous prime is 13669823. The next prime is 13669837. The reversal of 13669824 is 42896631.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13669823) 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, 8682 + ... + 10134.

Almost surely, 2^13669824 is an apocalyptic number.

13669824 is a gapful number since it is divisible by the number (14) 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 13669824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21051012).

13669824 is an abundant number, since it is smaller than the sum of its proper divisors (28432200).

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

13669824 is a wasteful number, since it uses less digits than its factorization.

13669824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1465 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 13669824 is about 3697.2725082147. The cubic root of 13669824 is about 239.1044401534.

The spelling of 13669824 in words is "thirteen million, six hundred sixty-nine thousand, eight hundred twenty-four".