28338891696 has 60 divisors (see below), whose sum is σ = 79841876400. Its totient is φ = 9382892160.

The previous prime is 28338891689. The next prime is 28338891809. The reversal of 28338891696 is 69619883382.

28338891696 is a `hidden beast` number, since 2 + 83 + 388 + 91 + 6 + 96 = 666.

It is a nude number because it is divisible by every one of its digits.

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, 638940 + ... + 681851.

It is an arithmetic number, because the mean of its divisors is an integer number (1330697940).

Almost surely, 2^28338891696 is an apocalyptic number.

It is an amenable number.

28338891696 is an abundant number, since it is smaller than the sum of its proper divisors (51502984704).

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

28338891696 is a wasteful number, since it uses less digits than its factorization.

28338891696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320954 (or 1320945 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The spelling of 28338891696 in words is "twenty-eight billion, three hundred thirty-eight million, eight hundred ninety-one thousand, six hundred ninety-six".