28308454483818 has 16 divisors (see below), whose sum is σ = 56617280678016. Its totient is φ = 9436089542880.

The previous prime is 28308454483747. The next prime is 28308454483819. The reversal of 28308454483818 is 81838445480382.

It is not an unprimeable number, because it can be changed into a prime (28308454483819) 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, 14492971 + ... + 16329822.

It is an arithmetic number, because the mean of its divisors is an integer number (3538580042376).

Almost surely, 2^{28308454483818} is an apocalyptic number.

28308454483818 is an abundant number, since it is smaller than the sum of its proper divisors (28308826194198).

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

28308454483818 is a wasteful number, since it uses less digits than its factorization.

28308454483818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30975869.

The product of its (nonzero) digits is 188743680, while the sum is 66.

The spelling of 28308454483818 in words is "twenty-eight trillion, three hundred eight billion, four hundred fifty-four million, four hundred eighty-three thousand, eight hundred eighteen".