28739548 has 12 divisors (see below), whose sum is σ = 50813392. Its totient is φ = 14221440.

The previous prime is 28739519. The next prime is 28739569. The reversal of 28739548 is 84593782.

It is a junction number, because it is equal to n+sod(n) for n = 28739498 and 28739507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36648 + ... + 37423.

Almost surely, 2^28739548 is an apocalyptic number.

It is an amenable number.

28739548 is a deficient number, since it is larger than the sum of its proper divisors (22073844).

28739548 is a wasteful number, since it uses less digits than its factorization.

28739548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74172 (or 74170 counting only the distinct ones).

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

The square root of 28739548 is about 5360.9279047568. The cubic root of 28739548 is about 306.3091554199.

It can be divided in two parts, 2873 and 9548, that added together give a palindrome (12421).

The spelling of 28739548 in words is "twenty-eight million, seven hundred thirty-nine thousand, five hundred forty-eight".