20032693 has 2 divisors, whose sum is σ = 20032694. Its totient is φ = 20032692.

The previous prime is 20032687. The next prime is 20032709. The reversal of 20032693 is 39623002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20007729 + 24964 = 4473^2 + 158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20032693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20032633) 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, 10016346 + 10016347.

It is an arithmetic number, because the mean of its divisors is an integer number (10016347).

Almost surely, 2^20032693 is an apocalyptic number.

It is an amenable number.

20032693 is a deficient number, since it is larger than the sum of its proper divisors (1).

20032693 is an equidigital number, since it uses as much as digits as its factorization.

20032693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 20032693 is about 4475.7896510001. The cubic root of 20032693 is about 271.5895852340.

Adding to 20032693 its reverse (39623002), we get a palindrome (59655695).

The spelling of 20032693 in words is "twenty million, thirty-two thousand, six hundred ninety-three".