20290037 has 2 divisors, whose sum is σ = 20290038. Its totient is φ = 20290036.

The previous prime is 20290009. The next prime is 20290051. The reversal of 20290037 is 73009202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14070001 + 6220036 = 3751^2 + 2494^2 .

It is a cyclic number.

It is not a de Polignac number, because 20290037 - 2²⁰ = 19241461 is a prime.

It is a super-2 number, since 2×20290037² = 823371202922738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20289994 and 20290021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20290007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10145018 + 10145019.

It is an arithmetic number, because the mean of its divisors is an integer number (10145019).

Almost surely, 2^20290037 is an apocalyptic number.

It is an amenable number.

20290037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20290037 is an equidigital number, since it uses as much as digits as its factorization.

20290037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20290037 is about 4504.4463588770. The cubic root of 20290037 is about 272.7476053764.

Adding to 20290037 its reverse (73009202), we get a palindrome (93299239).

The spelling of 20290037 in words is "twenty million, two hundred ninety thousand, thirty-seven".