28519223 has 8 divisors (see below), whose sum is σ = 28826928. Its totient is φ = 28213504.

The previous prime is 28519213. The next prime is 28519229. The reversal of 28519223 is 32291582.

It is a happy number.

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 28519223 - 2⁶ = 28519159 is a prime.

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 28519223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28519229) 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, 60836 + ... + 61302.

It is an arithmetic number, because the mean of its divisors is an integer number (3603366).

Almost surely, 2^28519223 is an apocalyptic number.

28519223 is a deficient number, since it is larger than the sum of its proper divisors (307705).

28519223 is a wasteful number, since it uses less digits than its factorization.

28519223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993.

The product of its digits is 8640, while the sum is 32.

The square root of 28519223 is about 5340.3392214353. The cubic root of 28519223 is about 305.5243975183.

The spelling of 28519223 in words is "twenty-eight million, five hundred nineteen thousand, two hundred twenty-three".