20404022 has 8 divisors (see below), whose sum is σ = 30703536. Its totient is φ = 10169512.

The previous prime is 20404009. The next prime is 20404039. The reversal of 20404022 is 22040402.

It is a happy number.

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

It is a super-2 number, since 2×20404022² = 832648227552968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20403988 and 20404006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15458 + ... + 16725.

It is an arithmetic number, because the mean of its divisors is an integer number (3837942).

Almost surely, 2^20404022 is an apocalyptic number.

20404022 is a deficient number, since it is larger than the sum of its proper divisors (10299514).

20404022 is a wasteful number, since it uses less digits than its factorization.

20404022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32502.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 20404022 is about 4517.0811371947. The cubic root of 20404022 is about 273.2573974398.

Adding to 20404022 its reverse (22040402), we get a palindrome (42444424).

It can be divided in two parts, 2040402 and 2, that multiplied together give a palindrome (4080804).

The spelling of 20404022 in words is "twenty million, four hundred four thousand, twenty-two".