27120069 has 16 divisors (see below), whose sum is σ = 40266240. Its totient is φ = 18040320.

The previous prime is 27120043. The next prime is 27120097. The reversal of 27120069 is 96002172.

It is not a de Polignac number, because 27120069 - 2¹² = 27115973 is a prime.

It is a super-2 number, since 2×27120069² = 1470996285129522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27120019) 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, 16524 + ... + 18090.

It is an arithmetic number, because the mean of its divisors is an integer number (2516640).

Almost surely, 2^27120069 is an apocalyptic number.

It is an amenable number.

27120069 is a deficient number, since it is larger than the sum of its proper divisors (13146171).

27120069 is a wasteful number, since it uses less digits than its factorization.

27120069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217 (or 2211 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 27120069 is about 5207.6932513350. The cubic root of 27120069 is about 300.4440424301. Note that the first 3 decimals are identical.

The spelling of 27120069 in words is "twenty-seven million, one hundred twenty thousand, sixty-nine".