28885745678 has 8 divisors (see below), whose sum is σ = 45212471568. Its totient is φ = 13814921824.

The previous prime is 28885745677. The next prime is 28885745743. The reversal of 28885745678 is 87654758882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28885745677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313975451 + ... + 313975542.

It is an arithmetic number, because the mean of its divisors is an integer number (5651558946).

Almost surely, 2^28885745678 is an apocalyptic number.

28885745678 is a deficient number, since it is larger than the sum of its proper divisors (16326725890).

28885745678 is a wasteful number, since it uses less digits than its factorization.

28885745678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627951018.

The product of its digits is 240844800, while the sum is 68.

The spelling of 28885745678 in words is "twenty-eight billion, eight hundred eighty-five million, seven hundred forty-five thousand, six hundred seventy-eight".