20422641 has 8 divisors (see below), whose sum is σ = 28169280. Its totient is φ = 13145552.

The previous prime is 20422637. The next prime is 20422651. The reversal of 20422641 is 14622402.

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 20422641 - 2² = 20422637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20422601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117285 + ... + 117458.

It is an arithmetic number, because the mean of its divisors is an integer number (3521160).

Almost surely, 2^20422641 is an apocalyptic number.

It is an amenable number.

20422641 is a deficient number, since it is larger than the sum of its proper divisors (7746639).

20422641 is a wasteful number, since it uses less digits than its factorization.

20422641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234775.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 20422641 is about 4519.1416220340. The cubic root of 20422641 is about 273.3404894352.

The spelling of 20422641 in words is "twenty million, four hundred twenty-two thousand, six hundred forty-one".