28218148918 has 8 divisors (see below), whose sum is σ = 42331045248. Its totient is φ = 14107800504.

The previous prime is 28218148891. The next prime is 28218148919. The reversal of 28218148918 is 81984181282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28218148919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609046 + ... + 653737.

It is an arithmetic number, because the mean of its divisors is an integer number (5291380656).

Almost surely, 2^28218148918 is an apocalyptic number.

28218148918 is a deficient number, since it is larger than the sum of its proper divisors (14112896330).

28218148918 is a wasteful number, since it uses less digits than its factorization.

28218148918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273958.

The product of its digits is 589824, while the sum is 52.

The spelling of 28218148918 in words is "twenty-eight billion, two hundred eighteen million, one hundred forty-eight thousand, nine hundred eighteen".