20768297388 has 24 divisors (see below), whose sum is σ = 48489300720. Its totient is φ = 6918488640.

The previous prime is 20768297383. The next prime is 20768297437. The reversal of 20768297388 is 88379286702.

It is not an unprimeable number, because it can be changed into a prime (20768297383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514383 + ... + 553286.

It is an arithmetic number, because the mean of its divisors is an integer number (2020387530).

Almost surely, 2^20768297388 is an apocalyptic number.

It is an amenable number.

20768297388 is an abundant number, since it is smaller than the sum of its proper divisors (27721003332).

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

20768297388 is a wasteful number, since it uses less digits than its factorization.

20768297388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069297 (or 1069295 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 20768297388 in words is "twenty billion, seven hundred sixty-eight million, two hundred ninety-seven thousand, three hundred eighty-eight".