28404093808 has 10 divisors (see below), whose sum is σ = 55032931784. Its totient is φ = 14202046896.

The previous prime is 28404093797. The next prime is 28404093811. The reversal of 28404093808 is 80839040482.

It is a super-3 number, since 3×28404093808³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 887627916 + ... + 887627947.

Almost surely, 2^28404093808 is an apocalyptic number.

It is an amenable number.

28404093808 is a deficient number, since it is larger than the sum of its proper divisors (26628837976).

28404093808 is a wasteful number, since it uses less digits than its factorization.

28404093808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775255871 (or 1775255865 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 28404093808 in words is "twenty-eight billion, four hundred four million, ninety-three thousand, eight hundred eight".