28727805984 has 48 divisors (see below), whose sum is σ = 75424335840. Its totient is φ = 9574177280.

The previous prime is 28727805961. The next prime is 28727806039. The reversal of 28727805984 is 48950872782.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564172 + ... + 612980.

It is an arithmetic number, because the mean of its divisors is an integer number (1571340330).

Almost surely, 2^28727805984 is an apocalyptic number.

28727805984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28727805984 is an abundant number, since it is smaller than the sum of its proper divisors (46696529856).

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

28727805984 is a wasteful number, since it uses less digits than its factorization.

28727805984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54953 (or 54945 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 28727805984 in words is "twenty-eight billion, seven hundred twenty-seven million, eight hundred five thousand, nine hundred eighty-four".