28954223 has 4 divisors (see below), whose sum is σ = 28965888. Its totient is φ = 28942560.

The previous prime is 28954201. The next prime is 28954231. The reversal of 28954223 is 32245982.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28954223 - 2¹² = 28950127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28954243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458 + ... + 7623.

It is an arithmetic number, because the mean of its divisors is an integer number (7241472).

Almost surely, 2^28954223 is an apocalyptic number.

28954223 is a deficient number, since it is larger than the sum of its proper divisors (11665).

28954223 is an equidigital number, since it uses as much as digits as its factorization.

28954223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11664.

The product of its digits is 34560, while the sum is 35.

The square root of 28954223 is about 5380.9128407734. The cubic root of 28954223 is about 307.0699405985.

The spelling of 28954223 in words is "twenty-eight million, nine hundred fifty-four thousand, two hundred twenty-three".