28378747286 has 16 divisors (see below), whose sum is σ = 43982167968. Its totient is φ = 13725566400.

The previous prime is 28378747283. The next prime is 28378747307. The reversal of 28378747286 is 68274787382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28378747283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1877855 + ... + 1892906.

It is an arithmetic number, because the mean of its divisors is an integer number (2748885498).

Almost surely, 2^28378747286 is an apocalyptic number.

28378747286 is a deficient number, since it is larger than the sum of its proper divisors (15603420682).

28378747286 is a wasteful number, since it uses less digits than its factorization.

28378747286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770887.

The product of its digits is 50577408, while the sum is 62.

The spelling of 28378747286 in words is "twenty-eight billion, three hundred seventy-eight million, seven hundred forty-seven thousand, two hundred eighty-six".