20421422304 has 48 divisors (see below), whose sum is σ = 55454731920. Its totient is φ = 6572410880.

The previous prime is 20421422297. The next prime is 20421422317. The reversal of 20421422304 is 40322412402.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3664857 + ... + 3670424.

It is an arithmetic number, because the mean of its divisors is an integer number (1155306915).

Almost surely, 2^20421422304 is an apocalyptic number.

20421422304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20421422304 is an abundant number, since it is smaller than the sum of its proper divisors (35033309616).

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

20421422304 is a wasteful number, since it uses less digits than its factorization.

20421422304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7335323 (or 7335315 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20421422304 its reverse (40322412402), we get a palindrome (60743834706).

The spelling of 20421422304 in words is "twenty billion, four hundred twenty-one million, four hundred twenty-two thousand, three hundred four".