20422426 has 4 divisors (see below), whose sum is σ = 30633642. Its totient is φ = 10211212.

The previous prime is 20422421. The next prime is 20422427. The reversal of 20422426 is 62422402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19351201 + 1071225 = 4399^2 + 1035^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20422397 and 20422406.

It is not an unprimeable number, because it can be changed into a prime (20422421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105605 + ... + 5105608.

Almost surely, 2^20422426 is an apocalyptic number.

20422426 is a deficient number, since it is larger than the sum of its proper divisors (10211216).

20422426 is a wasteful number, since it uses less digits than its factorization.

20422426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10211215.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 20422426 is about 4519.1178342681. The cubic root of 20422426 is about 273.3395302316.

Adding to 20422426 its reverse (62422402), we get a palindrome (82844828).

The spelling of 20422426 in words is "twenty million, four hundred twenty-two thousand, four hundred twenty-six".