28318128 has 40 divisors (see below), whose sum is σ = 75518976. Its totient is φ = 9134400.

The previous prime is 28318127. The next prime is 28318133. The reversal of 28318128 is 82181382.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28318127) 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, 8028 + ... + 11003.

Almost surely, 2^28318128 is an apocalyptic number.

It is an amenable number.

28318128 is an abundant number, since it is smaller than the sum of its proper divisors (47200848).

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

28318128 is a wasteful number, since it uses less digits than its factorization.

28318128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19073 (or 19067 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 28318128 is about 5321.4779901828. The cubic root of 28318128 is about 304.8045975843.

The spelling of 28318128 in words is "twenty-eight million, three hundred eighteen thousand, one hundred twenty-eight".