28380148 has 24 divisors (see below), whose sum is σ = 52646720. Its totient is φ = 13348800.

The previous prime is 28380139. The next prime is 28380161. The reversal of 28380148 is 84108382.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10240 + ... + 12712.

Almost surely, 2^28380148 is an apocalyptic number.

It is an amenable number.

28380148 is a deficient number, since it is larger than the sum of its proper divisors (24266572).

28380148 is a wasteful number, since it uses less digits than its factorization.

28380148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647 (or 2645 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 28380148 is about 5327.3021314733. The cubic root of 28380148 is about 305.0269545290.

The spelling of 28380148 in words is "twenty-eight million, three hundred eighty thousand, one hundred forty-eight".