20226347 has 2 divisors, whose sum is σ = 20226348. Its totient is φ = 20226346.

The previous prime is 20226313. The next prime is 20226359. The reversal of 20226347 is 74362202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20226347 - 2⁸ = 20226091 is a prime.

It is a super-2 number, since 2×20226347² = 818210225928818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20226397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10113173 + 10113174.

It is an arithmetic number, because the mean of its divisors is an integer number (10113174).

Almost surely, 2^20226347 is an apocalyptic number.

20226347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20226347 is an equidigital number, since it uses as much as digits as its factorization.

20226347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 20226347 is about 4497.3711209995. The cubic root of 20226347 is about 272.4619232492.

Adding to 20226347 its reverse (74362202), we get a palindrome (94588549).

The spelling of 20226347 in words is "twenty million, two hundred twenty-six thousand, three hundred forty-seven".