28081471608 has 64 divisors (see below), whose sum is σ = 78117388800. Its totient is φ = 9346894560.

The previous prime is 28081471601. The next prime is 28081471609. The reversal of 28081471608 is 80617418082.

28081471608 is a `hidden beast` number, since 28 + 0 + 8 + 14 + 7 + 1 + 608 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28081471601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55185 + ... + 243327.

It is an arithmetic number, because the mean of its divisors is an integer number (1220584200).

Almost surely, 2^28081471608 is an apocalyptic number.

It is an amenable number.

28081471608 is an abundant number, since it is smaller than the sum of its proper divisors (50035917192).

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

28081471608 is a wasteful number, since it uses less digits than its factorization.

28081471608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188849 (or 188839 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 28081471608 in words is "twenty-eight billion, eighty-one million, four hundred seventy-one thousand, six hundred eight".