28578814378 has 16 divisors (see below), whose sum is σ = 44267650560. Its totient is φ = 13823276400.

The previous prime is 28578814367. The next prime is 28578814387. The reversal of 28578814378 is 87341887582.

It is a happy 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, 83068 + ... + 253096.

It is an arithmetic number, because the mean of its divisors is an integer number (2766728160).

Almost surely, 2^28578814378 is an apocalyptic number.

28578814378 is a deficient number, since it is larger than the sum of its proper divisors (15688836182).

28578814378 is a wasteful number, since it uses less digits than its factorization.

28578814378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172773.

The product of its digits is 24084480, while the sum is 61.

The spelling of 28578814378 in words is "twenty-eight billion, five hundred seventy-eight million, eight hundred fourteen thousand, three hundred seventy-eight".