28813843968 has 400 divisors, whose sum is σ = 96599140176. Its totient is φ = 7586611200.

The previous prime is 28813843951. The next prime is 28813843969. The reversal of 28813843968 is 86934831882.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28813843969) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 47942868 + ... + 47943468.

Almost surely, 2^28813843968 is an apocalyptic number.

28813843968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28813843968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48299570088).

28813843968 is an abundant number, since it is smaller than the sum of its proper divisors (67785296208).

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

28813843968 is an frugal number, since it uses more digits than its factorization.

28813843968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 626 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 60.

The spelling of 28813843968 in words is "twenty-eight billion, eight hundred thirteen million, eight hundred forty-three thousand, nine hundred sixty-eight".