20404023422 has 16 divisors (see below), whose sum is σ = 31229951760. Its totient is φ = 9994612992.

The previous prime is 20404023397. The next prime is 20404023457. The reversal of 20404023422 is 22432040402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71672 + ... + 214347.

It is an arithmetic number, because the mean of its divisors is an integer number (1951871985).

Almost surely, 2^20404023422 is an apocalyptic number.

20404023422 is a deficient number, since it is larger than the sum of its proper divisors (10825928338).

20404023422 is a wasteful number, since it uses less digits than its factorization.

20404023422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286747.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 20404023422 its reverse (22432040402), we get a palindrome (42836063824).

The spelling of 20404023422 in words is "twenty billion, four hundred four million, twenty-three thousand, four hundred twenty-two".