20284065792 has 384 divisors, whose sum is σ = 64393056000. Its totient is φ = 6293422080.

The previous prime is 20284065779. The next prime is 20284065803. The reversal of 20284065792 is 29756048202.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×20284065792² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52143934 + ... + 52144322.

It is an arithmetic number, because the mean of its divisors is an integer number (167690250).

Almost surely, 2^20284065792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20284065792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32196528000).

20284065792 is an abundant number, since it is smaller than the sum of its proper divisors (44108990208).

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

20284065792 is a wasteful number, since it uses less digits than its factorization.

20284065792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 20284065792 in words is "twenty billion, two hundred eighty-four million, sixty-five thousand, seven hundred ninety-two".