20883459328 has 72 divisors (see below), whose sum is σ = 44216625600. Its totient is φ = 9809879040.

The previous prime is 20883459313. The next prime is 20883459329. The reversal of 20883459328 is 82395438802.

It is a super-2 number, since 2×20883459328² (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 (20883459329) 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, 2602843 + ... + 2610853.

It is an arithmetic number, because the mean of its divisors is an integer number (614119800).

Almost surely, 2^20883459328 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 20883459328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22108312800).

20883459328 is an abundant number, since it is smaller than the sum of its proper divisors (23333166272).

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

20883459328 is an equidigital number, since it uses as much as digits as its factorization.

20883459328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8643 (or 8629 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 20883459328 in words is "twenty billion, eight hundred eighty-three million, four hundred fifty-nine thousand, three hundred twenty-eight".