13624420 has 12 divisors (see below), whose sum is σ = 28611324. Its totient is φ = 5449760.

The previous prime is 13624397. The next prime is 13624427. The reversal of 13624420 is 2442631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7193124 + 6431296 = 2682^2 + 2536^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13624391 and 13624400.

It is not an unprimeable number, because it can be changed into a prime (13624427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340591 + ... + 340630.

It is an arithmetic number, because the mean of its divisors is an integer number (2384277).

Almost surely, 2^13624420 is an apocalyptic number.

13624420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13624420 is an abundant number, since it is smaller than the sum of its proper divisors (14986904).

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

13624420 is a wasteful number, since it uses less digits than its factorization.

13624420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681230 (or 681228 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 13624420 is about 3691.1271991087. The cubic root of 13624420 is about 238.8394199192.

The spelling of 13624420 in words is "thirteen million, six hundred twenty-four thousand, four hundred twenty".