20433411240 has 64 divisors (see below), whose sum is σ = 66872986560. Its totient is φ = 4953553920.

The previous prime is 20433411227. The next prime is 20433411241. The reversal of 20433411240 is 4211433402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20433411240.

It is not an unprimeable number, because it can be changed into a prime (20433411241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7738609 + ... + 7741248.

It is an arithmetic number, because the mean of its divisors is an integer number (1044890415).

Almost surely, 2^20433411240 is an apocalyptic number.

20433411240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20433411240 is an abundant number, since it is smaller than the sum of its proper divisors (46439575320).

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

20433411240 is a wasteful number, since it uses less digits than its factorization.

20433411240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15479882 (or 15479878 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20433411240 its reverse (4211433402), we get a palindrome (24644844642).

The spelling of 20433411240 in words is "twenty billion, four hundred thirty-three million, four hundred eleven thousand, two hundred forty".