20788037 has 2 divisors, whose sum is σ = 20788038. Its totient is φ = 20788036.

The previous prime is 20788013. The next prime is 20788039. The reversal of 20788037 is 73088702.

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., 12773476 + 8014561 = 3574^2 + 2831^2 .

It is a cyclic number.

It is not a de Polignac number, because 20788037 - 2¹² = 20783941 is a prime.

Together with 20788039, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20787988 and 20788006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20788039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10394018 + 10394019.

It is an arithmetic number, because the mean of its divisors is an integer number (10394019).

Almost surely, 2^20788037 is an apocalyptic number.

It is an amenable number.

20788037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20788037 is an equidigital number, since it uses as much as digits as its factorization.

20788037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 20788037 is about 4559.3899811269. The cubic root of 20788037 is about 274.9610391085.

The spelling of 20788037 in words is "twenty million, seven hundred eighty-eight thousand, thirty-seven".