28539748 has 12 divisors (see below), whose sum is σ = 52573360. Its totient is φ = 13518792.

The previous prime is 28539743. The next prime is 28539751. The reversal of 28539748 is 84793582.

It is a junction number, because it is equal to n+sod(n) for n = 28539698 and 28539707.

It is not an unprimeable number, because it can be changed into a prime (28539743) 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, 187686 + ... + 187837.

Almost surely, 2^28539748 is an apocalyptic number.

It is an amenable number.

28539748 is a deficient number, since it is larger than the sum of its proper divisors (24033612).

28539748 is a wasteful number, since it uses less digits than its factorization.

28539748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375546 (or 375544 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 28539748 is about 5342.2605702081. The cubic root of 28539748 is about 305.5976742283.

The spelling of 28539748 in words is "twenty-eight million, five hundred thirty-nine thousand, seven hundred forty-eight".