20226737 has 2 divisors, whose sum is σ = 20226738. Its totient is φ = 20226736.

The previous prime is 20226721. The next prime is 20226749. The reversal of 20226737 is 73762202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10764961 + 9461776 = 3281^2 + 3076^2 .

It is a cyclic number.

It is not a de Polignac number, because 20226737 - 2⁴ = 20226721 is a prime.

It is not a weakly prime, because it can be changed into another prime (20226707) 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, 10113368 + 10113369.

It is an arithmetic number, because the mean of its divisors is an integer number (10113369).

Almost surely, 2^20226737 is an apocalyptic number.

It is an amenable number.

20226737 is a deficient number, since it is larger than the sum of its proper divisors (1).

20226737 is an equidigital number, since it uses as much as digits as its factorization.

20226737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20226737 is about 4497.4144794537. The cubic root of 20226737 is about 272.4636744216.

Adding to 20226737 its reverse (73762202), we get a palindrome (93988939).

The spelling of 20226737 in words is "twenty million, two hundred twenty-six thousand, seven hundred thirty-seven".