28518648 has 16 divisors (see below), whose sum is σ = 71296680. Its totient is φ = 9506208.

The previous prime is 28518647. The next prime is 28518661. The reversal of 28518648 is 84681582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28518647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594115 + ... + 594162.

Almost surely, 2^28518648 is an apocalyptic number.

It is an amenable number.

28518648 is an abundant number, since it is smaller than the sum of its proper divisors (42778032).

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

28518648 is a wasteful number, since it uses less digits than its factorization.

28518648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188286 (or 1188282 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 28518648 is about 5340.2853856325. The cubic root of 28518648 is about 305.5223441932.

The spelling of 28518648 in words is "twenty-eight million, five hundred eighteen thousand, six hundred forty-eight".