28347555208 has 32 divisors (see below), whose sum is σ = 60798700800. Its totient is φ = 12138164352.

The previous prime is 28347555193. The next prime is 28347555221. The reversal of 28347555208 is 80255574382.

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, 160960 + ... + 287407.

It is an arithmetic number, because the mean of its divisors is an integer number (1899959400).

Almost surely, 2^28347555208 is an apocalyptic number.

28347555208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28347555208 is an abundant number, since it is smaller than the sum of its proper divisors (32451145592).

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

28347555208 is a wasteful number, since it uses less digits than its factorization.

28347555208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449509 (or 449505 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 49.

The spelling of 28347555208 in words is "twenty-eight billion, three hundred forty-seven million, five hundred fifty-five thousand, two hundred eight".