28605965 has 8 divisors (see below), whose sum is σ = 35125728. Its totient is φ = 22352400.

The previous prime is 28605961. The next prime is 28605989. The reversal of 28605965 is 56950682.

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

It is not a de Polignac number, because 28605965 - 2² = 28605961 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 (28605961) 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, 66311 + ... + 66740.

It is an arithmetic number, because the mean of its divisors is an integer number (4390716).

Almost surely, 2^28605965 is an apocalyptic number.

It is an amenable number.

28605965 is a deficient number, since it is larger than the sum of its proper divisors (6519763).

28605965 is a wasteful number, since it uses less digits than its factorization.

28605965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133099.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 28605965 is about 5348.4544496518. The cubic root of 28605965 is about 305.8338376218.

The spelling of 28605965 in words is "twenty-eight million, six hundred five thousand, nine hundred sixty-five".