20422037 has 2 divisors, whose sum is σ = 20422038. Its totient is φ = 20422036.

The previous prime is 20422027. The next prime is 20422043. The reversal of 20422037 is 73022402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20421361 + 676 = 4519^2 + 26^2 .

It is a cyclic number.

It is not a de Polignac number, because 20422037 - 2⁴ = 20422021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20422027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211018 + 10211019.

It is an arithmetic number, because the mean of its divisors is an integer number (10211019).

Almost surely, 2^20422037 is an apocalyptic number.

It is an amenable number.

20422037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422037 is an equidigital number, since it uses as much as digits as its factorization.

20422037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20422037 is about 4519.0747946897. The cubic root of 20422037 is about 273.3377947252.

Adding to 20422037 its reverse (73022402), we get a palindrome (93444439).

The spelling of 20422037 in words is "twenty million, four hundred twenty-two thousand, thirty-seven".