27628565 has 8 divisors (see below), whose sum is σ = 34899360. Its totient is φ = 20939472.

The previous prime is 27628511. The next prime is 27628567. The reversal of 27628565 is 56582672.

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

It is a cyclic number.

It is not a de Polignac number, because 27628565 - 2⁸ = 27628309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27628567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145319 + ... + 145508.

It is an arithmetic number, because the mean of its divisors is an integer number (4362420).

Almost surely, 2^27628565 is an apocalyptic number.

It is an amenable number.

27628565 is a deficient number, since it is larger than the sum of its proper divisors (7270795).

27628565 is a wasteful number, since it uses less digits than its factorization.

27628565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290851.

The product of its digits is 201600, while the sum is 41.

The square root of 27628565 is about 5256.2881389817. The cubic root of 27628565 is about 302.3101830355.

The spelling of 27628565 in words is "twenty-seven million, six hundred twenty-eight thousand, five hundred sixty-five".