20033020 has 24 divisors (see below), whose sum is σ = 48079584. Its totient is φ = 6868416.

The previous prime is 20033009. The next prime is 20033029. The reversal of 20033020 is 2033002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20032988 and 20033006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20033029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71407 + ... + 71686.

It is an arithmetic number, because the mean of its divisors is an integer number (2003316).

Almost surely, 2^20033020 is an apocalyptic number.

20033020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20033020 is an abundant number, since it is smaller than the sum of its proper divisors (28046564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20033020 is a wasteful number, since it uses less digits than its factorization.

20033020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143109 (or 143107 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 20033020 is about 4475.8261807179. The cubic root of 20033020 is about 271.5910629736.

Adding to 20033020 its reverse (2033002), we get a palindrome (22066022).

The spelling of 20033020 in words is "twenty million, thirty-three thousand, twenty".