20043304240 has 40 divisors (see below), whose sum is σ = 46618266240. Its totient is φ = 8014296576.

The previous prime is 20043304201. The next prime is 20043304247. The reversal of 20043304240 is 4240334002.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (20043304247) 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, 172417 + ... + 264223.

It is an arithmetic number, because the mean of its divisors is an integer number (1165456656).

Almost surely, 2^20043304240 is an apocalyptic number.

20043304240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20043304240 is an abundant number, since it is smaller than the sum of its proper divisors (26574962000).

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

20043304240 is a wasteful number, since it uses less digits than its factorization.

20043304240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94549 (or 94543 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20043304240 its reverse (4240334002), we get a palindrome (24283638242).

The spelling of 20043304240 in words is "twenty billion, forty-three million, three hundred four thousand, two hundred forty".