20749380284 has 6 divisors (see below), whose sum is σ = 36311415504. Its totient is φ = 10374690140.

The previous prime is 20749380227. The next prime is 20749380329. The reversal of 20749380284 is 48208394702.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2593672532 + ... + 2593672539.

It is an arithmetic number, because the mean of its divisors is an integer number (6051902584).

Almost surely, 2^20749380284 is an apocalyptic number.

It is an amenable number.

20749380284 is a deficient number, since it is larger than the sum of its proper divisors (15562035220).

20749380284 is a wasteful number, since it uses less digits than its factorization.

20749380284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5187345075 (or 5187345073 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 20749380284 in words is "twenty billion, seven hundred forty-nine million, three hundred eighty thousand, two hundred eighty-four".