28942696278 has 48 divisors (see below), whose sum is σ = 65111089680. Its totient is φ = 9635793696.

The previous prime is 28942696259. The next prime is 28942696283. The reversal of 28942696278 is 87269624982.

28942696278 is a `hidden beast` number, since 2 + 89 + 426 + 9 + 62 + 78 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 366976 + ... + 438812.

It is an arithmetic number, because the mean of its divisors is an integer number (1356481035).

Almost surely, 2^28942696278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28942696278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32555544840).

28942696278 is an abundant number, since it is smaller than the sum of its proper divisors (36168393402).

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

28942696278 is an equidigital number, since it uses as much as digits as its factorization.

28942696278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72683 (or 72671 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The spelling of 28942696278 in words is "twenty-eight billion, nine hundred forty-two million, six hundred ninety-six thousand, two hundred seventy-eight".