28830243 has 16 divisors (see below), whose sum is σ = 41829536. Its totient is φ = 17556480.

The previous prime is 28830233. The next prime is 28830271. The reversal of 28830243 is 34203882.

It is not a de Polignac number, because 28830243 - 2⁴ = 28830227 is a prime.

It is a super-2 number, since 2×28830243² = 1662365822878098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28830243.

It is not an unprimeable number, because it can be changed into a prime (28830233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (2614346).

Almost surely, 2^28830243 is an apocalyptic number.

28830243 is a deficient number, since it is larger than the sum of its proper divisors (12999293).

28830243 is a wasteful number, since it uses less digits than its factorization.

28830243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7734.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 28830243 is about 5369.3801318215. The cubic root of 28830243 is about 306.6310293864.

The spelling of 28830243 in words is "twenty-eight million, eight hundred thirty thousand, two hundred forty-three".