28478088944 has 10 divisors (see below), whose sum is σ = 55176297360. Its totient is φ = 14239044464.

The previous prime is 28478088931. The next prime is 28478088959. The reversal of 28478088944 is 44988087482.

It is a super-2 number, since 2×28478088944² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 889940264 + ... + 889940295.

It is an arithmetic number, because the mean of its divisors is an integer number (5517629736).

Almost surely, 2^28478088944 is an apocalyptic number.

It is an amenable number.

28478088944 is a deficient number, since it is larger than the sum of its proper divisors (26698208416).

28478088944 is a wasteful number, since it uses less digits than its factorization.

28478088944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779880567 (or 1779880561 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 62.

The spelling of 28478088944 in words is "twenty-eight billion, four hundred seventy-eight million, eighty-eight thousand, nine hundred forty-four".