28704554 has 24 divisors (see below), whose sum is σ = 46085760. Its totient is φ = 13405032.

The previous prime is 28704553. The next prime is 28704593. The reversal of 28704554 is 45540782.

It is not an unprimeable number, because it can be changed into a prime (28704553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59687 + ... + 60165.

It is an arithmetic number, because the mean of its divisors is an integer number (1920240).

Almost surely, 2^28704554 is an apocalyptic number.

28704554 is a deficient number, since it is larger than the sum of its proper divisors (17381206).

28704554 is a wasteful number, since it uses less digits than its factorization.

28704554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 28704554 is about 5357.6631099762. The cubic root of 28704554 is about 306.1847816696.

The spelling of 28704554 in words is "twenty-eight million, seven hundred four thousand, five hundred fifty-four".