20010033 has 12 divisors (see below), whose sum is σ = 29202628. Its totient is φ = 13201920.

The previous prime is 20010017. The next prime is 20010041. The reversal of 20010033 is 33001002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9199089 + 10810944 = 3033^2 + 3288^2 .

It is not a de Polignac number, because 20010033 - 2⁴ = 20010017 is a prime.

It is a super-2 number, since 2×20010033² = 800802841322178, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20009997 and 20010024.

It is not an unprimeable number, because it can be changed into a prime (20010073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10588 + ... + 12333.

Almost surely, 2^20010033 is an apocalyptic number.

It is an amenable number.

20010033 is a deficient number, since it is larger than the sum of its proper divisors (9192595).

20010033 is a wasteful number, since it uses less digits than its factorization.

20010033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23024 (or 23021 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 20010033 is about 4473.2575378576. The cubic root of 20010033 is about 271.4871436583.

Adding to 20010033 its reverse (33001002), we get a palindrome (53011035).

The spelling of 20010033 in words is "twenty million, ten thousand, thirty-three".