28378052484 has 24 divisors (see below), whose sum is σ = 66240265728. Its totient is φ = 9455806560.

The previous prime is 28378052473. The next prime is 28378052503. The reversal of 28378052484 is 48425087382.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409572 + ... + 473819.

It is an arithmetic number, because the mean of its divisors is an integer number (2760011072).

Almost surely, 2^28378052484 is an apocalyptic number.

It is an amenable number.

28378052484 is an abundant number, since it is smaller than the sum of its proper divisors (37862213244).

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

28378052484 is a wasteful number, since it uses less digits than its factorization.

28378052484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886075 (or 886073 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 51.

The spelling of 28378052484 in words is "twenty-eight billion, three hundred seventy-eight million, fifty-two thousand, four hundred eighty-four".