28399880558 has 8 divisors (see below), whose sum is σ = 48685509552. Its totient is φ = 12171377376.

The previous prime is 28399880521. The next prime is 28399880581. The reversal of 28399880558 is 85508899382.

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

It is a super-3 number, since 3×28399880558³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28399880494 and 28399880503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1014281435 + ... + 1014281462.

It is an arithmetic number, because the mean of its divisors is an integer number (6085688694).

Almost surely, 2^28399880558 is an apocalyptic number.

28399880558 is a deficient number, since it is larger than the sum of its proper divisors (20285628994).

28399880558 is a wasteful number, since it uses less digits than its factorization.

28399880558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028562906.

The product of its (nonzero) digits is 49766400, while the sum is 65.

The spelling of 28399880558 in words is "twenty-eight billion, three hundred ninety-nine million, eight hundred eighty thousand, five hundred fifty-eight".