20303794340 has 48 divisors (see below), whose sum is σ = 42845643120. Its totient is φ = 8082063360.

The previous prime is 20303794271. The next prime is 20303794349. The reversal of 20303794340 is 4349730302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10937813056 + 9365981284 = 104584^2 + 96778^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20303794340.

It is not an unprimeable number, because it can be changed into a prime (20303794349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3643076 + ... + 3648644.

It is an arithmetic number, because the mean of its divisors is an integer number (892617565).

Almost surely, 2^20303794340 is an apocalyptic number.

20303794340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303794340 is an abundant number, since it is smaller than the sum of its proper divisors (22541848780).

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

20303794340 is a wasteful number, since it uses less digits than its factorization.

20303794340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432 (or 6430 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 35.

The spelling of 20303794340 in words is "twenty billion, three hundred three million, seven hundred ninety-four thousand, three hundred forty".