28969497960 has 256 divisors, whose sum is σ = 95528160000. Its totient is φ = 6984499200.

The previous prime is 28969497943. The next prime is 28969497967. The reversal of 28969497960 is 6979496982.

It is not an unprimeable number, because it can be changed into a prime (28969497967) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41325610 + ... + 41326310.

It is an arithmetic number, because the mean of its divisors is an integer number (373156875).

Almost surely, 2^28969497960 is an apocalyptic number.

28969497960 is a gapful number since it is divisible by the number (20) 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 28969497960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47764080000).

28969497960 is an abundant number, since it is smaller than the sum of its proper divisors (66558662040).

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

28969497960 is a wasteful number, since it uses less digits than its factorization.

28969497960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 69.

The spelling of 28969497960 in words is "twenty-eight billion, nine hundred sixty-nine million, four hundred ninety-seven thousand, nine hundred sixty".