28668502770 has 16 divisors (see below), whose sum is σ = 68804406720. Its totient is φ = 7644934064.

The previous prime is 28668502747. The next prime is 28668502771. The reversal of 28668502770 is 7720586682.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28668502771) 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, 477808350 + ... + 477808409.

It is an arithmetic number, because the mean of its divisors is an integer number (4300275420).

Almost surely, 2^28668502770 is an apocalyptic number.

28668502770 is an abundant number, since it is smaller than the sum of its proper divisors (40135903950).

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

28668502770 is a wasteful number, since it uses less digits than its factorization.

28668502770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955616769.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 28668502770 in words is "twenty-eight billion, six hundred sixty-eight million, five hundred two thousand, seven hundred seventy".