20284245468 has 72 divisors (see below), whose sum is σ = 53538576000. Its totient is φ = 6463185696.

The previous prime is 20284245467. The next prime is 20284245493. The reversal of 20284245468 is 86454248202.

20284245468 is a `hidden beast` number, since 2 + 0 + 2 + 84 + 24 + 546 + 8 = 666.

It is a super-2 number, since 2×20284245468² (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 (20284245463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1399563 + ... + 1413981.

Almost surely, 2^20284245468 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 20284245468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26769288000).

20284245468 is an abundant number, since it is smaller than the sum of its proper divisors (33254330532).

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

20284245468 is a wasteful number, since it uses less digits than its factorization.

20284245468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16151 (or 16146 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 45.

The spelling of 20284245468 in words is "twenty billion, two hundred eighty-four million, two hundred forty-five thousand, four hundred sixty-eight".