28068393744 has 60 divisors (see below), whose sum is σ = 78568398012. Its totient is φ = 9354240000.

The previous prime is 28068393737. The next prime is 28068393761. The reversal of 28068393744 is 44739386082.

It can be written as a sum of positive squares in 2 ways, for example, as 13381862400 + 14686531344 = 115680^2 + 121188^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 818544 + ... + 852144.

Almost surely, 2^28068393744 is an apocalyptic number.

28068393744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28068393744 is an abundant number, since it is smaller than the sum of its proper divisors (50500004268).

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

28068393744 is a wasteful number, since it uses less digits than its factorization.

28068393744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39416 (or 39407 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 28068393744 in words is "twenty-eight billion, sixty-eight million, three hundred ninety-three thousand, seven hundred forty-four".