20433020 has 12 divisors (see below), whose sum is σ = 42909384. Its totient is φ = 8173200.

The previous prime is 20433013. The next prime is 20433043. The reversal of 20433020 is 2033402.

It is a junction number, because it is equal to n+sod(n) for n = 20432986 and 20433004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510806 + ... + 510845.

It is an arithmetic number, because the mean of its divisors is an integer number (3575782).

Almost surely, 2^20433020 is an apocalyptic number.

20433020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20433020 is an abundant number, since it is smaller than the sum of its proper divisors (22476364).

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

20433020 is a wasteful number, since it uses less digits than its factorization.

20433020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021660 (or 1021658 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20433020 is about 4520.2898137177. The cubic root of 20433020 is about 273.3867864262.

Adding to 20433020 its reverse (2033402), we get a palindrome (22466422).

The spelling of 20433020 in words is "twenty million, four hundred thirty-three thousand, twenty".