20040422 has 8 divisors (see below), whose sum is σ = 30252576. Its totient is φ = 9956232.

The previous prime is 20040409. The next prime is 20040443. The reversal of 20040422 is 22404002.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20040397 and 20040406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31598 + ... + 32225.

It is an arithmetic number, because the mean of its divisors is an integer number (3781572).

Almost surely, 2^20040422 is an apocalyptic number.

20040422 is a deficient number, since it is larger than the sum of its proper divisors (10212154).

20040422 is a wasteful number, since it uses less digits than its factorization.

20040422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63982.

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

The square root of 20040422 is about 4476.6529907957. The cubic root of 20040422 is about 271.6245089127.

Adding to 20040422 its reverse (22404002), we get a palindrome (42444424).

The spelling of 20040422 in words is "twenty million, forty thousand, four hundred twenty-two".