20830937 has 2 divisors, whose sum is σ = 20830938. Its totient is φ = 20830936.

The previous prime is 20830907. The next prime is 20830949. The reversal of 20830937 is 73903802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20830096 + 841 = 4564^2 + 29^2 .

It is a cyclic number.

It is not a de Polignac number, because 20830937 - 2⁸ = 20830681 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20830907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10415468 + 10415469.

It is an arithmetic number, because the mean of its divisors is an integer number (10415469).

Almost surely, 2^20830937 is an apocalyptic number.

It is an amenable number.

20830937 is a deficient number, since it is larger than the sum of its proper divisors (1).

20830937 is an equidigital number, since it uses as much as digits as its factorization.

20830937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20830937 is about 4564.0921331630. The cubic root of 20830937 is about 275.1500536456.

The spelling of 20830937 in words is "twenty million, eight hundred thirty thousand, nine hundred thirty-seven".