20213420304 has 80 divisors (see below), whose sum is σ = 65102976000. Its totient is φ = 5250238080.

The previous prime is 20213420299. The next prime is 20213420323. The reversal of 20213420304 is 40302431202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2730804 + ... + 2738195.

It is an arithmetic number, because the mean of its divisors is an integer number (813787200).

Almost surely, 2^20213420304 is an apocalyptic number.

20213420304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20213420304 is an abundant number, since it is smaller than the sum of its proper divisors (44889555696).

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

20213420304 is a wasteful number, since it uses less digits than its factorization.

20213420304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469028 (or 5469022 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20213420304 its reverse (40302431202), we get a palindrome (60515851506).

The spelling of 20213420304 in words is "twenty billion, two hundred thirteen million, four hundred twenty thousand, three hundred four".