28383249856 has 42 divisors (see below), whose sum is σ = 60988846272. Its totient is φ = 13099956480.

The previous prime is 28383249847. The next prime is 28383249863. The reversal of 28383249856 is 65894238382.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28383249856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1301280 + ... + 1322911.

Almost surely, 2^28383249856 is an apocalyptic number.

28383249856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

28383249856 is an abundant number, since it is smaller than the sum of its proper divisors (32605596416).

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

28383249856 is a wasteful number, since it uses less digits than its factorization.

28383249856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624229 (or 2624206 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 58.

The spelling of 28383249856 in words is "twenty-eight billion, three hundred eighty-three million, two hundred forty-nine thousand, eight hundred fifty-six".