28078764814 has 32 divisors (see below), whose sum is σ = 43197530400. Its totient is φ = 13684733568.

The previous prime is 28078764811. The next prime is 28078764877. The reversal of 28078764814 is 41846787082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28078764811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5528044 + ... + 5533120.

It is an arithmetic number, because the mean of its divisors is an integer number (1349922825).

Almost surely, 2^28078764814 is an apocalyptic number.

28078764814 is a deficient number, since it is larger than the sum of its proper divisors (15118765586).

28078764814 is a wasteful number, since it uses less digits than its factorization.

28078764814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572.

The product of its (nonzero) digits is 4816896, while the sum is 55.

The spelling of 28078764814 in words is "twenty-eight billion, seventy-eight million, seven hundred sixty-four thousand, eight hundred fourteen".