20422443 has 8 divisors (see below), whose sum is σ = 27251856. Its totient is φ = 13604000.

The previous prime is 20422439. The next prime is 20422447. The reversal of 20422443 is 34422402.

It is an interprime number because it is at equal distance from previous prime (20422439) and next prime (20422447).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20422443 - 2² = 20422439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20422447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3913 + ... + 7493.

It is an arithmetic number, because the mean of its divisors is an integer number (3406482).

Almost surely, 2^20422443 is an apocalyptic number.

20422443 is a deficient number, since it is larger than the sum of its proper divisors (6829413).

20422443 is a wasteful number, since it uses less digits than its factorization.

20422443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5485.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 20422443 is about 4519.1197151658. The cubic root of 20422443 is about 273.3396060759.

Adding to 20422443 its reverse (34422402), we get a palindrome (54844845).

The spelling of 20422443 in words is "twenty million, four hundred twenty-two thousand, four hundred forty-three".