27988782 has 16 divisors (see below), whose sum is σ = 57169152. Its totient is φ = 9131000.

The previous prime is 27988777. The next prime is 27988787. The reversal of 27988782 is 28788972.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27988777) and next prime (27988787).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27988787) 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 7 ways as a sum of consecutive naturals, for example, 49344 + ... + 49907.

It is an arithmetic number, because the mean of its divisors is an integer number (3573072).

Almost surely, 2^27988782 is an apocalyptic number.

27988782 is an abundant number, since it is smaller than the sum of its proper divisors (29180370).

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

27988782 is a wasteful number, since it uses less digits than its factorization.

27988782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99303.

The product of its digits is 903168, while the sum is 51.

The square root of 27988782 is about 5290.4425145729. The cubic root of 27988782 is about 303.6183388479.

The spelling of 27988782 in words is "twenty-seven million, nine hundred eighty-eight thousand, seven hundred eighty-two".