28665465 has 8 divisors (see below), whose sum is σ = 45864768. Its totient is φ = 15288240.

The previous prime is 28665457. The next prime is 28665473. The reversal of 28665465 is 56456682.

It is an interprime number because it is at equal distance from previous prime (28665457) and next prime (28665473).

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

It is not a de Polignac number, because 28665465 - 2³ = 28665457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955501 + ... + 955530.

It is an arithmetic number, because the mean of its divisors is an integer number (5733096).

Almost surely, 2^28665465 is an apocalyptic number.

It is an amenable number.

28665465 is a deficient number, since it is larger than the sum of its proper divisors (17199303).

28665465 is a wasteful number, since it uses less digits than its factorization.

28665465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911039.

The product of its digits is 345600, while the sum is 42.

The square root of 28665465 is about 5354.0139148120. The cubic root of 28665465 is about 306.0457341187.

The spelling of 28665465 in words is "twenty-eight million, six hundred sixty-five thousand, four hundred sixty-five".