28143627568 has 40 divisors (see below), whose sum is σ = 65983803552. Its totient is φ = 11352050688.

The previous prime is 28143627553. The next prime is 28143627569. The reversal of 28143627568 is 86572634182.

It is not an unprimeable number, because it can be changed into a prime (28143627569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7388755 + ... + 7392562.

Almost surely, 2^28143627568 is an apocalyptic number.

28143627568 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28143627568 is an abundant number, since it is smaller than the sum of its proper divisors (37840175984).

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

28143627568 is a wasteful number, since it uses less digits than its factorization.

28143627568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14781349 (or 14781343 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The spelling of 28143627568 in words is "twenty-eight billion, one hundred forty-three million, six hundred twenty-seven thousand, five hundred sixty-eight".