20860684384 has 48 divisors (see below), whose sum is σ = 41726361600. Its totient is φ = 10264385664.

The previous prime is 20860684381. The next prime is 20860684409. The reversal of 20860684384 is 48348606802.

It is a super-2 number, since 2×20860684384² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20860684381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762657 + ... + 789535.

It is an arithmetic number, because the mean of its divisors is an integer number (869299200).

Almost surely, 2^20860684384 is an apocalyptic number.

It is an amenable number.

20860684384 is an abundant number, since it is smaller than the sum of its proper divisors (20865677216).

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

20860684384 is a wasteful number, since it uses less digits than its factorization.

20860684384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27275 (or 27267 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 20860684384 in words is "twenty billion, eight hundred sixty million, six hundred eighty-four thousand, three hundred eighty-four".