20422346 has 32 divisors (see below), whose sum is σ = 36675072. Its totient is φ = 8346240.

The previous prime is 20422343. The next prime is 20422357. The reversal of 20422346 is 64322402.

It is a super-2 number, since 2×20422346² = 834144432287432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20422343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26600 + ... + 27356.

It is an arithmetic number, because the mean of its divisors is an integer number (1146096).

Almost surely, 2^20422346 is an apocalyptic number.

20422346 is a deficient number, since it is larger than the sum of its proper divisors (16252726).

20422346 is a wasteful number, since it uses less digits than its factorization.

20422346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 20422346 is about 4519.1089829744. The cubic root of 20422346 is about 273.3391733170.

Adding to 20422346 its reverse (64322402), we get a palindrome (84744748).

The spelling of 20422346 in words is "twenty million, four hundred twenty-two thousand, three hundred forty-six".