20824422 has 16 divisors (see below), whose sum is σ = 44098992. Its totient is φ = 6533120.

The previous prime is 20824417. The next prime is 20824423. The reversal of 20824422 is 22442802.

It is a junction number, because it is equal to n+sod(n) for n = 20824392 and 20824401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20824423) 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 7 ways as a sum of consecutive naturals, for example, 101979 + ... + 102182.

It is an arithmetic number, because the mean of its divisors is an integer number (2756187).

Almost surely, 2^20824422 is an apocalyptic number.

20824422 is an abundant number, since it is smaller than the sum of its proper divisors (23274570).

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

20824422 is a wasteful number, since it uses less digits than its factorization.

20824422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204183.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 20824422 is about 4563.3783538076. The cubic root of 20824422 is about 275.1213657136.

The spelling of 20824422 in words is "twenty million, eight hundred twenty-four thousand, four hundred twenty-two".