27120906 has 20 divisors (see below), whose sum is σ = 60771282. Its totient is φ = 9040248.

The previous prime is 27120901. The next prime is 27120913. The reversal of 27120906 is 60902172.

It can be written as a sum of positive squares in only one way, i.e., 16329681 + 10791225 = 4041^2 + 3285^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 27120906.

It is not an unprimeable number, because it can be changed into a prime (27120901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 83545 + ... + 83868.

Almost surely, 2^27120906 is an apocalyptic number.

27120906 is an abundant number, since it is smaller than the sum of its proper divisors (33650376).

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

27120906 is a wasteful number, since it uses less digits than its factorization.

27120906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167427 (or 167418 counting only the distinct ones).

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

The square root of 27120906 is about 5207.7736125911. The cubic root of 27120906 is about 300.4471332418.

The spelling of 27120906 in words is "twenty-seven million, one hundred twenty thousand, nine hundred six".