28078748874 has 64 divisors (see below), whose sum is σ = 68093568000. Its totient is φ = 8505727920.

The previous prime is 28078748849. The next prime is 28078748881. The reversal of 28078748874 is 47884787082.

28078748874 is a `hidden beast` number, since 2 + 8 + 0 + 7 + 87 + 488 + 74 = 666.

It is a super-2 number, since 2×28078748874² (a number of 22 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 2166987 + ... + 2179905.

It is an arithmetic number, because the mean of its divisors is an integer number (1063962000).

Almost surely, 2^28078748874 is an apocalyptic number.

28078748874 is an abundant number, since it is smaller than the sum of its proper divisors (40014819126).

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

28078748874 is a wasteful number, since it uses less digits than its factorization.

28078748874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16600 (or 16594 counting only the distinct ones).

The product of its (nonzero) digits is 44957696, while the sum is 63.

The spelling of 28078748874 in words is "twenty-eight billion, seventy-eight million, seven hundred forty-eight thousand, eight hundred seventy-four".