27120705 has 16 divisors (see below), whose sum is σ = 43467840. Its totient is φ = 14439488.

The previous prime is 27120701. The next prime is 27120719. The reversal of 27120705 is 50702172.

It is a cyclic number.

It is not a de Polignac number, because 27120705 - 2² = 27120701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27120701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10426 + ... + 12764.

It is an arithmetic number, because the mean of its divisors is an integer number (2716740).

Almost surely, 2^27120705 is an apocalyptic number.

It is an amenable number.

27120705 is a deficient number, since it is larger than the sum of its proper divisors (16347135).

27120705 is a wasteful number, since it uses less digits than its factorization.

27120705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 27120705 is about 5207.7543144814. The cubic root of 27120705 is about 300.4463910097.

Adding to 27120705 its reverse (50702172), we get a palindrome (77822877).

The spelling of 27120705 in words is "twenty-seven million, one hundred twenty thousand, seven hundred five".