27906418 has 12 divisors (see below), whose sum is σ = 44467722. Its totient is φ = 13132160.

The previous prime is 27906413. The next prime is 27906419. The reversal of 27906418 is 81460972.

It can be written as a sum of positive squares in 3 ways, for example, as 27426169 + 480249 = 5237^2 + 693^2 .

It is not an unprimeable number, because it can be changed into a prime (27906413) 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 5 ways as a sum of consecutive naturals, for example, 23563 + ... + 24718.

Almost surely, 2^27906418 is an apocalyptic number.

27906418 is a deficient number, since it is larger than the sum of its proper divisors (16561304).

27906418 is a wasteful number, since it uses less digits than its factorization.

27906418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48317 (or 48300 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 27906418 is about 5282.6525534053. The cubic root of 27906418 is about 303.3202218970.

The spelling of 27906418 in words is "twenty-seven million, nine hundred six thousand, four hundred eighteen".