28927245 has 16 divisors (see below), whose sum is σ = 46350720. Its totient is φ = 15405504.

The previous prime is 28927211. The next prime is 28927259. The reversal of 28927245 is 54272982.

It is not a de Polignac number, because 28927245 - 2⁷ = 28927117 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 17776 + ... + 19334.

It is an arithmetic number, because the mean of its divisors is an integer number (2896920).

Almost surely, 2^28927245 is an apocalyptic number.

It is an amenable number.

28927245 is a deficient number, since it is larger than the sum of its proper divisors (17423475).

28927245 is a wasteful number, since it uses less digits than its factorization.

28927245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804.

The product of its digits is 80640, while the sum is 39.

The square root of 28927245 is about 5378.4054328397. The cubic root of 28927245 is about 306.9745405010.

The spelling of 28927245 in words is "twenty-eight million, nine hundred twenty-seven thousand, two hundred forty-five".