28917916608 has 56 divisors (see below), whose sum is σ = 87442275712. Its totient is φ = 8262261504.

The previous prime is 28917916603. The next prime is 28917916649. The reversal of 28917916608 is 80661971982.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28917916603) by changing a digit.

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, 10756810 + ... + 10759497.

Almost surely, 2^28917916608 is an apocalyptic number.

28917916608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28917916608 is an abundant number, since it is smaller than the sum of its proper divisors (58524359104).

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

28917916608 is a wasteful number, since it uses less digits than its factorization.

28917916608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21516329 (or 21516319 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 57.

The spelling of 28917916608 in words is "twenty-eight billion, nine hundred seventeen million, nine hundred sixteen thousand, six hundred eight".