20537703 has 12 divisors (see below), whose sum is σ = 30356040. Its totient is φ = 13373136.

The previous prime is 20537669. The next prime is 20537707. The reversal of 20537703 is 30773502.

It is not a de Polignac number, because 20537703 - 2¹² = 20533607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20537707) 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 in 11 ways as a sum of consecutive naturals, for example, 26148 + ... + 26921.

It is an arithmetic number, because the mean of its divisors is an integer number (2529670).

Almost surely, 2^20537703 is an apocalyptic number.

20537703 is a deficient number, since it is larger than the sum of its proper divisors (9818337).

20537703 is a wasteful number, since it uses less digits than its factorization.

20537703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53118 (or 53115 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 20537703 is about 4531.8542562620. The cubic root of 20537703 is about 273.8528655766.

The spelling of 20537703 in words is "twenty million, five hundred thirty-seven thousand, seven hundred three".