27918042 has 16 divisors (see below), whose sum is σ = 57637632. Its totient is φ = 9005760.

The previous prime is 27918041. The next prime is 27918083. The reversal of 27918042 is 24081972.

It is a happy number.

It is a super-2 number, since 2×27918042² = 1558834138227528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27917994 and 27918012.

It is not an unprimeable number, because it can be changed into a prime (27918041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74863 + ... + 75234.

It is an arithmetic number, because the mean of its divisors is an integer number (3602352).

Almost surely, 2^27918042 is an apocalyptic number.

27918042 is an abundant number, since it is smaller than the sum of its proper divisors (29719590).

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

27918042 is a wasteful number, since it uses less digits than its factorization.

27918042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150133.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 27918042 is about 5283.7526437183. The cubic root of 27918042 is about 303.3623305478.

The spelling of 27918042 in words is "twenty-seven million, nine hundred eighteen thousand, forty-two".