28497858818 has 32 divisors (see below), whose sum is σ = 50717282112. Its totient is φ = 11838744000.

The previous prime is 28497858811. The next prime is 28497858821. The reversal of 28497858818 is 81885879482.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28497858811) 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, 464396 + ... + 522167.

It is an arithmetic number, because the mean of its divisors is an integer number (1584915066).

Almost surely, 2^28497858818 is an apocalyptic number.

28497858818 is a deficient number, since it is larger than the sum of its proper divisors (22219423294).

28497858818 is a wasteful number, since it uses less digits than its factorization.

28497858818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986690.

The product of its digits is 82575360, while the sum is 68.

The spelling of 28497858818 in words is "twenty-eight billion, four hundred ninety-seven million, eight hundred fifty-eight thousand, eight hundred eighteen".