20422841 has 4 divisors (see below), whose sum is σ = 20451072. Its totient is φ = 20394612.

The previous prime is 20422837. The next prime is 20422847. The reversal of 20422841 is 14822402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20422841 - 2² = 20422837 is a prime.

It is a super-2 number, since 2×20422841² = 834184869022562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20422847) 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, 13001 + ... + 14486.

It is an arithmetic number, because the mean of its divisors is an integer number (5112768).

Almost surely, 2^20422841 is an apocalyptic number.

It is an amenable number.

20422841 is a deficient number, since it is larger than the sum of its proper divisors (28231).

20422841 is an equidigital number, since it uses as much as digits as its factorization.

20422841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28230.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 20422841 is about 4519.1637500759. The cubic root of 20422841 is about 273.3413817116.

It can be divided in two parts, 204 and 22841, that multiplied together give a palindrome (4659564).

The spelling of 20422841 in words is "twenty million, four hundred twenty-two thousand, eight hundred forty-one".