20433005340 has 96 divisors (see below), whose sum is σ = 62890248960. Its totient is φ = 4915622400.

The previous prime is 20433005311. The next prime is 20433005357. The reversal of 20433005340 is 4350033402.

It is a self number, because there is not a number n which added to its sum of digits gives 20433005340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31705 + ... + 204624.

It is an arithmetic number, because the mean of its divisors is an integer number (655106760).

Almost surely, 2^20433005340 is an apocalyptic number.

20433005340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20433005340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31445124480).

20433005340 is an abundant number, since it is smaller than the sum of its proper divisors (42457243620).

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

20433005340 is a wasteful number, since it uses less digits than its factorization.

20433005340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236483 (or 236481 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

Adding to 20433005340 its reverse (4350033402), we get a palindrome (24783038742).

The spelling of 20433005340 in words is "twenty billion, four hundred thirty-three million, five thousand, three hundred forty".