20424433040 has 80 divisors (see below), whose sum is σ = 54530349120. Its totient is φ = 7036162560.

The previous prime is 20424433039. The next prime is 20424433079. The reversal of 20424433040 is 4033442402.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 594059 + ... + 627498.

It is an arithmetic number, because the mean of its divisors is an integer number (681629364).

Almost surely, 2^20424433040 is an apocalyptic number.

20424433040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20424433040 is an abundant number, since it is smaller than the sum of its proper divisors (34105916080).

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

20424433040 is a wasteful number, since it uses less digits than its factorization.

20424433040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221600 (or 1221594 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20424433040 its reverse (4033442402), we get a palindrome (24457875442).

The spelling of 20424433040 in words is "twenty billion, four hundred twenty-four million, four hundred thirty-three thousand, forty".