28399804473 has 8 divisors (see below), whose sum is σ = 38672074368. Its totient is φ = 18530368784.

The previous prime is 28399804399. The next prime is 28399804501. The reversal of 28399804473 is 37440899382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28399804473 - 2²⁶ = 28332695609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28399804973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100708386 + ... + 100708667.

It is an arithmetic number, because the mean of its divisors is an integer number (4834009296).

Almost surely, 2^28399804473 is an apocalyptic number.

It is an amenable number.

28399804473 is a deficient number, since it is larger than the sum of its proper divisors (10272269895).

28399804473 is a wasteful number, since it uses less digits than its factorization.

28399804473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201417103.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 28399804473 in words is "twenty-eight billion, three hundred ninety-nine million, eight hundred four thousand, four hundred seventy-three".