27905906 has 16 divisors (see below), whose sum is σ = 48009024. Its totient is φ = 11917104.

The previous prime is 27905903. The next prime is 27905963. The reversal of 27905906 is 60950972.

It is a self number, because there is not a number n which added to its sum of digits gives 27905906.

It is not an unprimeable number, because it can be changed into a prime (27905903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701 + ... + 7503.

It is an arithmetic number, because the mean of its divisors is an integer number (3000564).

Almost surely, 2^27905906 is an apocalyptic number.

27905906 is a deficient number, since it is larger than the sum of its proper divisors (20103118).

27905906 is a wasteful number, since it uses less digits than its factorization.

27905906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7105.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 27905906 is about 5282.6040926800. The cubic root of 27905906 is about 303.3183668769.

The spelling of 27905906 in words is "twenty-seven million, nine hundred five thousand, nine hundred six".