20030733 has 36 divisors (see below), whose sum is σ = 31176288. Its totient is φ = 12859560.

The previous prime is 20030713. The next prime is 20030737. The reversal of 20030733 is 33703002.

It is not a de Polignac number, because 20030733 - 2⁶ = 20030669 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 282088 + ... + 282158.

It is an arithmetic number, because the mean of its divisors is an integer number (866008).

Almost surely, 2^20030733 is an apocalyptic number.

It is an amenable number.

20030733 is a deficient number, since it is larger than the sum of its proper divisors (11145555).

20030733 is an frugal number, since it uses more digits than its factorization.

20030733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 18.

The square root of 20030733 is about 4475.5706898674. The cubic root of 20030733 is about 271.5807274975.

Adding to 20030733 its reverse (33703002), we get a palindrome (53733735).

The spelling of 20030733 in words is "twenty million, thirty thousand, seven hundred thirty-three".