28318018412 has 12 divisors (see below), whose sum is σ = 49813303176. Its totient is φ = 14085646080.

The previous prime is 28318018409. The next prime is 28318018451. The reversal of 28318018412 is 21481081382.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18339914 + ... + 18341457.

It is an arithmetic number, because the mean of its divisors is an integer number (4151108598).

Almost surely, 2^28318018412 is an apocalyptic number.

It is an amenable number.

28318018412 is a deficient number, since it is larger than the sum of its proper divisors (21495284764).

28318018412 is a wasteful number, since it uses less digits than its factorization.

28318018412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36681568 (or 36681566 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

Adding to 28318018412 its reverse (21481081382), we get a palindrome (49799099794).

The spelling of 28318018412 in words is "twenty-eight billion, three hundred eighteen million, eighteen thousand, four hundred twelve".