28539449000 has 32 divisors (see below), whose sum is σ = 66782313000. Its totient is φ = 11415779200.

The previous prime is 28539448991. The next prime is 28539449021. The reversal of 28539449000 is 94493582.

It can be written as a sum of positive squares in 4 ways, for example, as 9313408036 + 19226040964 = 96506^2 + 138658^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14268725 + ... + 14270724.

Almost surely, 2^28539449000 is an apocalyptic number.

28539449000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28539449000 is an abundant number, since it is smaller than the sum of its proper divisors (38242864000).

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

28539449000 is a wasteful number, since it uses less digits than its factorization.

28539449000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28539470 (or 28539456 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 28539449000 in words is "twenty-eight billion, five hundred thirty-nine million, four hundred forty-nine thousand".