27789897 has 8 divisors (see below), whose sum is σ = 37575360. Its totient is φ = 18265520.

The previous prime is 27789893. The next prime is 27789899. The reversal of 27789897 is 79898772.

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 27789897 - 2² = 27789893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27789893) 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, 65022 + ... + 65447.

It is an arithmetic number, because the mean of its divisors is an integer number (4696920).

Almost surely, 2^27789897 is an apocalyptic number.

It is an amenable number.

27789897 is a deficient number, since it is larger than the sum of its proper divisors (9785463).

27789897 is a wasteful number, since it uses less digits than its factorization.

27789897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130543.

The product of its digits is 3556224, while the sum is 57.

The square root of 27789897 is about 5271.6123719409. The cubic root of 27789897 is about 302.8974699114.

The spelling of 27789897 in words is "twenty-seven million, seven hundred eighty-nine thousand, eight hundred ninety-seven".