28528547 has 8 divisors (see below), whose sum is σ = 29573040. Its totient is φ = 27488160.

The previous prime is 28528543. The next prime is 28528571. The reversal of 28528547 is 74582582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28528547 - 2² = 28528543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28528543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22913 + ... + 24125.

It is an arithmetic number, because the mean of its divisors is an integer number (3696630).

Almost surely, 2^28528547 is an apocalyptic number.

28528547 is a deficient number, since it is larger than the sum of its proper divisors (1044493).

28528547 is a wasteful number, since it uses less digits than its factorization.

28528547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053.

The product of its digits is 179200, while the sum is 41.

The square root of 28528547 is about 5341.2121283469. The cubic root of 28528547 is about 305.5576896723.

The spelling of 28528547 in words is "twenty-eight million, five hundred twenty-eight thousand, five hundred forty-seven".