28617243 has 16 divisors (see below), whose sum is σ = 39369216. Its totient is φ = 18476640.

The previous prime is 28617227. The next prime is 28617269. The reversal of 28617243 is 34271682.

It is not a de Polignac number, because 28617243 - 2⁴ = 28617227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28617203) by changing a digit.

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, 30958 + ... + 31868.

It is an arithmetic number, because the mean of its divisors is an integer number (2460576).

Almost surely, 2^28617243 is an apocalyptic number.

28617243 is a deficient number, since it is larger than the sum of its proper divisors (10751973).

28617243 is a wasteful number, since it uses less digits than its factorization.

28617243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234.

The product of its digits is 16128, while the sum is 33.

The square root of 28617243 is about 5349.5086690275. The cubic root of 28617243 is about 305.8740243548.

The spelling of 28617243 in words is "twenty-eight million, six hundred seventeen thousand, two hundred forty-three".