28718793040912 has 80 divisors (see below), whose sum is σ = 60364130792112. Its totient is φ = 13157233090560.

The previous prime is 28718793040879. The next prime is 28718793040913. The reversal of 28718793040912 is 21904039781782.

It can be written as a sum of positive squares in 8 ways, for example, as 17044380138256 + 11674412902656 = 4128484^2 + 3416784^2 .

It is not an unprimeable number, because it can be changed into a prime (28718793040913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748314268 + ... + 748352644.

Almost surely, 2^{28718793040912} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28718793040912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30182065396056).

28718793040912 is an abundant number, since it is smaller than the sum of its proper divisors (31645337751200).

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

28718793040912 is a wasteful number, since it uses less digits than its factorization.

28718793040912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64796 (or 64790 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 28718793040912 in words is "twenty-eight trillion, seven hundred eighteen billion, seven hundred ninety-three million, forty thousand, nine hundred twelve".