28558965 has 8 divisors (see below), whose sum is σ = 45694368. Its totient is φ = 15231440.

The previous prime is 28558961. The next prime is 28558973. The reversal of 28558965 is 56985582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28558965 - 2² = 28558961 is a prime.

It is a super-2 number, since 2×28558965² = 1631228963742450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28558961) 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, 951951 + ... + 951980.

It is an arithmetic number, because the mean of its divisors is an integer number (5711796).

Almost surely, 2^28558965 is an apocalyptic number.

It is an amenable number.

28558965 is a deficient number, since it is larger than the sum of its proper divisors (17135403).

28558965 is a wasteful number, since it uses less digits than its factorization.

28558965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903939.

The product of its digits is 864000, while the sum is 48.

The square root of 28558965 is about 5344.0588507239. The cubic root of 28558965 is about 305.6662493829. Note that the first 3 decimals are identical.

The spelling of 28558965 in words is "twenty-eight million, five hundred fifty-eight thousand, nine hundred sixty-five".