28045149696 has 200 divisors, whose sum is σ = 88633579320. Its totient is φ = 8798257152.

The previous prime is 28045149689. The next prime is 28045149731. The reversal of 28045149696 is 69694154082.

28045149696 is a `hidden beast` number, since 28 + 0 + 45 + 1 + 496 + 96 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 685135 + ... + 724913.

Almost surely, 2^28045149696 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 28045149696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44316789660).

28045149696 is an abundant number, since it is smaller than the sum of its proper divisors (60588429624).

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

28045149696 is an equidigital number, since it uses as much as digits as its factorization.

28045149696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39826 (or 39801 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 28045149696 in words is "twenty-eight billion, forty-five million, one hundred forty-nine thousand, six hundred ninety-six".