20427037 has 2 divisors, whose sum is σ = 20427038. Its totient is φ = 20427036.

The previous prime is 20427031. The next prime is 20427041. The reversal of 20427037 is 73072402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11148921 + 9278116 = 3339^2 + 3046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20427037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20427031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10213518 + 10213519.

It is an arithmetic number, because the mean of its divisors is an integer number (10213519).

Almost surely, 2^20427037 is an apocalyptic number.

It is an amenable number.

20427037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20427037 is an equidigital number, since it uses as much as digits as its factorization.

20427037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 20427037 is about 4519.6279714153. The cubic root of 20427037 is about 273.3601003267.

Adding to 20427037 its reverse (73072402), we get a palindrome (93499439).

The spelling of 20427037 in words is "twenty million, four hundred twenty-seven thousand, thirty-seven".