13620824 has 24 divisors (see below), whose sum is σ = 29709540. Its totient is φ = 5837328.

The previous prime is 13620797. The next prime is 13620829. The reversal of 13620824 is 42802631.

It is a junction number, because it is equal to n+sod(n) for n = 13620793 and 13620802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13620829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16982 + ... + 17765.

Almost surely, 2^13620824 is an apocalyptic number.

13620824 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13620824 is an abundant number, since it is smaller than the sum of its proper divisors (16088716).

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

13620824 is a wasteful number, since it uses less digits than its factorization.

13620824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34767 (or 34756 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 13620824 is about 3690.6400528906. The cubic root of 13620824 is about 238.8184051499.

The spelling of 13620824 in words is "thirteen million, six hundred twenty thousand, eight hundred twenty-four".