20489527296 has 504 divisors, whose sum is σ = 71918748720. Its totient is φ = 5499518976.

The previous prime is 20489527291. The next prime is 20489527297. The reversal of 20489527296 is 69272598402.

20489527296 is a `hidden beast` number, since 2 + 0 + 489 + 5 + 2 + 72 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20489527291) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 553770990 + ... + 553771026.

It is an arithmetic number, because the mean of its divisors is an integer number (142695930).

Almost surely, 2^20489527296 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 20489527296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35959374360).

20489527296 is an abundant number, since it is smaller than the sum of its proper divisors (51429221424).

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

20489527296 is an equidigital number, since it uses as much as digits as its factorization.

20489527296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 20489527296 in words is "twenty billion, four hundred eighty-nine million, five hundred twenty-seven thousand, two hundred ninety-six".