27120345 has 32 divisors (see below), whose sum is σ = 49911552. Its totient is φ = 12317952.

The previous prime is 27120341. The next prime is 27120349. The reversal of 27120345 is 54302172.

It is an interprime number because it is at equal distance from previous prime (27120341) and next prime (27120349).

It is not a de Polignac number, because 27120345 - 2² = 27120341 is a prime.

It is a super-2 number, since 2×27120345² = 1471026225838050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27120341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17419 + ... + 18911.

It is an arithmetic number, because the mean of its divisors is an integer number (1559736).

Almost surely, 2^27120345 is an apocalyptic number.

It is an amenable number.

27120345 is a deficient number, since it is larger than the sum of its proper divisors (22791207).

27120345 is a wasteful number, since it uses less digits than its factorization.

27120345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 27120345 is about 5207.7197505242. The cubic root of 27120345 is about 300.4450616295.

The spelling of 27120345 in words is "twenty-seven million, one hundred twenty thousand, three hundred forty-five".