20430033240 has 64 divisors (see below), whose sum is σ = 61372857600. Its totient is φ = 5440652672.

The previous prime is 20430033209. The next prime is 20430033259. The reversal of 20430033240 is 4233003402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25410 + ... + 203729.

It is an arithmetic number, because the mean of its divisors is an integer number (958950900).

Almost surely, 2^20430033240 is an apocalyptic number.

20430033240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20430033240 is an abundant number, since it is smaller than the sum of its proper divisors (40942824360).

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

20430033240 is a wasteful number, since it uses less digits than its factorization.

20430033240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229896 (or 229892 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 20430033240 its reverse (4233003402), we get a palindrome (24663036642).

The spelling of 20430033240 in words is "twenty billion, four hundred thirty million, thirty-three thousand, two hundred forty".