20000033 has 2 divisors, whose sum is σ = 20000034. Its totient is φ = 20000032.

The previous prime is 20000023. The next prime is 20000047. The reversal of 20000033 is 33000002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16224784 + 3775249 = 4028^2 + 1943^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000033 - 2²² = 15805729 is a prime.

20000033 is a modest number, since divided by 33 gives 20 as remainder.

It is not a weakly prime, because it can be changed into another prime (20000003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000016 + 10000017.

It is an arithmetic number, because the mean of its divisors is an integer number (10000017).

Almost surely, 2^20000033 is an apocalyptic number.

It is an amenable number.

20000033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000033 is an equidigital number, since it uses as much as digits as its factorization.

20000033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 8.

The square root of 20000033 is about 4472.1396445102. The cubic root of 20000033 is about 271.4419109524.

Adding to 20000033 its reverse (33000002), we get a palindrome (53000035).

The spelling of 20000033 in words is "twenty million, thirty-three", and thus it is an aban number and an uban number.