27941778 has 48 divisors (see below), whose sum is σ = 64696320. Its totient is φ = 8684928.

The previous prime is 27941777. The next prime is 27941779. The reversal of 27941778 is 87714972.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27941777) and next prime (27941779).

It is not an unprimeable number, because it can be changed into a prime (27941777) 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 23 ways as a sum of consecutive naturals, for example, 38503 + ... + 39221.

It is an arithmetic number, because the mean of its divisors is an integer number (1347840).

Almost surely, 2^27941778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27941778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32348160).

27941778 is an abundant number, since it is smaller than the sum of its proper divisors (36754542).

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

27941778 is a wasteful number, since it uses less digits than its factorization.

27941778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 868 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 27941778 is about 5285.9982973891. The cubic root of 27941778 is about 303.4482793712.

The spelling of 27941778 in words is "twenty-seven million, nine hundred forty-one thousand, seven hundred seventy-eight".