20001304340 has 24 divisors (see below), whose sum is σ = 42021744072. Its totient is φ = 7996901760.

The previous prime is 20001304327. The next prime is 20001304469. The reversal of 20001304340 is 4340310002.

It can be written as a sum of positive squares in 4 ways, for example, as 10224445456 + 9776858884 = 101116^2 + 98878^2 .

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, 180719 + ... + 269558.

It is an arithmetic number, because the mean of its divisors is an integer number (1750906003).

Almost surely, 2^20001304340 is an apocalyptic number.

20001304340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001304340 is an abundant number, since it is smaller than the sum of its proper divisors (22020439732).

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

20001304340 is a wasteful number, since it uses less digits than its factorization.

20001304340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452507 (or 452505 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20001304340 its reverse (4340310002), we get a palindrome (24341614342).

The spelling of 20001304340 in words is "twenty billion, one million, three hundred four thousand, three hundred forty".