28396450368 has 672 divisors, whose sum is σ = 102308111360. Its totient is φ = 7664025600.

The previous prime is 28396450349. The next prime is 28396450471. The reversal of 28396450368 is 86305469382.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 84262296 + ... + 84262632.

Almost surely, 2^28396450368 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 28396450368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51154055680).

28396450368 is an abundant number, since it is smaller than the sum of its proper divisors (73911660992).

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

28396450368 is a wasteful number, since it uses less digits than its factorization.

28396450368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 28396450368 in words is "twenty-eight billion, three hundred ninety-six million, four hundred fifty thousand, three hundred sixty-eight".