28769223 has 12 divisors (see below), whose sum is σ = 44621880. Its totient is φ = 16439472.

The previous prime is 28769207. The next prime is 28769233. The reversal of 28769223 is 32296782.

It is not a de Polignac number, because 28769223 - 2⁴ = 28769207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28769203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97708 + ... + 98001.

It is an arithmetic number, because the mean of its divisors is an integer number (3718490).

Almost surely, 2^28769223 is an apocalyptic number.

28769223 is a deficient number, since it is larger than the sum of its proper divisors (15852657).

28769223 is a wasteful number, since it uses less digits than its factorization.

28769223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195726 (or 195719 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 28769223 is about 5363.6949018377. The cubic root of 28769223 is about 306.4145455888.

The spelling of 28769223 in words is "twenty-eight million, seven hundred sixty-nine thousand, two hundred twenty-three".