28288770368 has 56 divisors (see below), whose sum is σ = 56798626560. Its totient is φ = 13977884160.

The previous prime is 28288770337. The next prime is 28288770371. The reversal of 28288770368 is 86307788282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3351113 + ... + 3359543.

Almost surely, 2^28288770368 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 28288770368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28399313280).

28288770368 is an abundant number, since it is smaller than the sum of its proper divisors (28509856192).

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

28288770368 is a wasteful number, since it uses less digits than its factorization.

28288770368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055 (or 9045 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 59.

The spelling of 28288770368 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred seventy thousand, three hundred sixty-eight".