20848392728 has 16 divisors (see below), whose sum is σ = 39922454880. Its totient is φ = 10202404768.

The previous prime is 20848392727. The next prime is 20848392737. The reversal of 20848392728 is 82729384802.

It is a self number, because there is not a number n which added to its sum of digits gives 20848392728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20848392727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27723551 + ... + 27724302.

It is an arithmetic number, because the mean of its divisors is an integer number (2495153430).

Almost surely, 2^20848392728 is an apocalyptic number.

It is an amenable number.

20848392728 is a deficient number, since it is larger than the sum of its proper divisors (19074062152).

20848392728 is a wasteful number, since it uses less digits than its factorization.

20848392728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55447906 (or 55447902 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 20848392728 in words is "twenty billion, eight hundred forty-eight million, three hundred ninety-two thousand, seven hundred twenty-eight".