28078734048 has 48 divisors (see below), whose sum is σ = 75698758800. Its totient is φ = 9106615296.

The previous prime is 28078734023. The next prime is 28078734053. The reversal of 28078734048 is 84043787082.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3948973 + ... + 3956076.

It is an arithmetic number, because the mean of its divisors is an integer number (1577057475).

Almost surely, 2^28078734048 is an apocalyptic number.

It is an amenable number.

28078734048 is an abundant number, since it is smaller than the sum of its proper divisors (47620024752).

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

28078734048 is a wasteful number, since it uses less digits than its factorization.

28078734048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7905099 (or 7905091 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 51.

The spelling of 28078734048 in words is "twenty-eight billion, seventy-eight million, seven hundred thirty-four thousand, forty-eight".