27012100 has 18 divisors (see below), whose sum is σ = 58616474. Its totient is φ = 10804800.

The previous prime is 27012023. The next prime is 27012103. The reversal of 27012100 is 121072.

It can be written as a sum of positive squares in 3 ways, for example, as 715716 + 26296384 = 846^2 + 5128^2 .

It is not an unprimeable number, because it can be changed into a prime (27012103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134961 + ... + 135160.

Almost surely, 2^27012100 is an apocalyptic number.

27012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27012100 is an abundant number, since it is smaller than the sum of its proper divisors (31604374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27012100 is a wasteful number, since it uses less digits than its factorization.

27012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270135 (or 270128 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 27012100 is about 5197.3166153314. The cubic root of 27012100 is about 300.0448081219.

Adding to 27012100 its reverse (121072), we get a palindrome (27133172).

The spelling of 27012100 in words is "twenty-seven million, twelve thousand, one hundred".