28965394248 has 128 divisors (see below), whose sum is σ = 84696883200. Its totient is φ = 8082710784.

The previous prime is 28965394247. The next prime is 28965394307. The reversal of 28965394248 is 84249356982.

It is a junction number, because it is equal to n+sod(n) for n = 28965394191 and 28965394200.

It is not an unprimeable number, because it can be changed into a prime (28965394243) 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, 4015461 + ... + 4022667.

It is an arithmetic number, because the mean of its divisors is an integer number (661694400).

Almost surely, 2^28965394248 is an apocalyptic number.

28965394248 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 28965394248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42348441600).

28965394248 is an abundant number, since it is smaller than the sum of its proper divisors (55731488952).

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

28965394248 is a wasteful number, since it uses less digits than its factorization.

28965394248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779 (or 7775 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 60.

The spelling of 28965394248 in words is "twenty-eight billion, nine hundred sixty-five million, three hundred ninety-four thousand, two hundred forty-eight".