20330421400 has 48 divisors (see below), whose sum is σ = 47283469200. Its totient is φ = 8129546880.

The previous prime is 20330421383. The next prime is 20330421409. The reversal of 20330421400 is 412403302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330421409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 679149 + ... + 708451.

It is an arithmetic number, because the mean of its divisors is an integer number (985072275).

Almost surely, 2^20330421400 is an apocalyptic number.

20330421400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330421400 is an abundant number, since it is smaller than the sum of its proper divisors (26953047800).

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

20330421400 is a wasteful number, since it uses less digits than its factorization.

20330421400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32788 (or 32779 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20330421400 its reverse (412403302), we get a palindrome (20742824702).

The spelling of 20330421400 in words is "twenty billion, three hundred thirty million, four hundred twenty-one thousand, four hundred".