27090105 has 64 divisors (see below), whose sum is σ = 53698560. Its totient is φ = 11384064.

The previous prime is 27090101. The next prime is 27090109. The reversal of 27090105 is 50109072.

It is an interprime number because it is at equal distance from previous prime (27090101) and next prime (27090109).

It is not a de Polignac number, because 27090105 - 2² = 27090101 is a prime.

It is a super-2 number, since 2×27090105² = 1467747577822050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (27090101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73632 + ... + 73998.

It is an arithmetic number, because the mean of its divisors is an integer number (839040).

Almost surely, 2^27090105 is an apocalyptic number.

It is an amenable number.

27090105 is a deficient number, since it is larger than the sum of its proper divisors (26608455).

27090105 is a wasteful number, since it uses less digits than its factorization.

27090105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 27090105 is about 5204.8155586918. The cubic root of 27090105 is about 300.3333516739. Note that the first 4 decimals are identical.

Adding to 27090105 its reverse (50109072), we get a palindrome (77199177).

The spelling of 27090105 in words is "twenty-seven million, ninety thousand, one hundred five".