20601824 has 24 divisors (see below), whose sum is σ = 42946848. Its totient is φ = 9694720.

The previous prime is 20601817. The next prime is 20601851. The reversal of 20601824 is 42810602.

It is a self number, because there is not a number n which added to its sum of digits gives 20601824.

It is a congruent number.

It is an unprimeable number.

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, 18392 + ... + 19479.

It is an arithmetic number, because the mean of its divisors is an integer number (1789452).

Almost surely, 2^20601824 is an apocalyptic number.

It is an amenable number.

20601824 is an abundant number, since it is smaller than the sum of its proper divisors (22345024).

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

20601824 is a wasteful number, since it uses less digits than its factorization.

20601824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37898 (or 37890 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20601824 is about 4538.9232203244. The cubic root of 20601824 is about 274.1375692223.

The spelling of 20601824 in words is "twenty million, six hundred one thousand, eight hundred twenty-four".