28788548 has 48 divisors (see below), whose sum is σ = 56609280. Its totient is φ = 12739584.

The previous prime is 28788547. The next prime is 28788559. The reversal of 28788548 is 84588782.

It is a junction number, because it is equal to n+sod(n) for n = 28788496 and 28788505.

It is not an unprimeable number, because it can be changed into a prime (28788541) 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 15 ways as a sum of consecutive naturals, for example, 123440 + ... + 123672.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^28788548 is an apocalyptic number.

It is an amenable number.

28788548 is a deficient number, since it is larger than the sum of its proper divisors (27820732).

28788548 is a wasteful number, since it uses less digits than its factorization.

28788548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 50.

The square root of 28788548 is about 5365.4960628072. The cubic root of 28788548 is about 306.4831389802.

The spelling of 28788548 in words is "twenty-eight million, seven hundred eighty-eight thousand, five hundred forty-eight".