28237840968 has 128 divisors (see below), whose sum is σ = 76229683200. Its totient is φ = 8694529536.

The previous prime is 28237840963. The next prime is 28237840993. The reversal of 28237840968 is 86904873282.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28237840963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2105821 + ... + 2119187.

It is an arithmetic number, because the mean of its divisors is an integer number (595544400).

Almost surely, 2^28237840968 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 28237840968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38114841600).

28237840968 is an abundant number, since it is smaller than the sum of its proper divisors (47991842232).

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

28237840968 is a wasteful number, since it uses less digits than its factorization.

28237840968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13531 (or 13527 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 28237840968 in words is "twenty-eight billion, two hundred thirty-seven million, eight hundred forty thousand, nine hundred sixty-eight".