28279355012 has 24 divisors (see below), whose sum is σ = 49614129432. Its totient is φ = 14103936000.

The previous prime is 28279355011. The next prime is 28279355023. The reversal of 28279355012 is 21055397282.

It can be written as a sum of positive squares in 4 ways, for example, as 11103679876 + 17175675136 = 105374^2 + 131056^2 .

It is not an unprimeable number, because it can be changed into a prime (28279355011) 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, 2851262 + ... + 2861162.

It is an arithmetic number, because the mean of its divisors is an integer number (2067255393).

Almost surely, 2^28279355012 is an apocalyptic number.

It is an amenable number.

28279355012 is a deficient number, since it is larger than the sum of its proper divisors (21334774420).

28279355012 is a wasteful number, since it uses less digits than its factorization.

28279355012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11639 (or 11637 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 28279355012 in words is "twenty-eight billion, two hundred seventy-nine million, three hundred fifty-five thousand, twelve".