27819412 has 24 divisors (see below), whose sum is σ = 52945704. Its totient is φ = 12736512.

The previous prime is 27819391. The next prime is 27819427. The reversal of 27819412 is 21491872.

It can be written as a sum of positive squares in 4 ways, for example, as 8844676 + 18974736 = 2974^2 + 4356^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

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, 3013 + ... + 8044.

It is an arithmetic number, because the mean of its divisors is an integer number (2206071).

Almost surely, 2^27819412 is an apocalyptic number.

It is an amenable number.

27819412 is a deficient number, since it is larger than the sum of its proper divisors (25126292).

27819412 is a wasteful number, since it uses less digits than its factorization.

27819412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11115 (or 11113 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 27819412 is about 5274.4110571703. The cubic root of 27819412 is about 303.0046654112.

The spelling of 27819412 in words is "twenty-seven million, eight hundred nineteen thousand, four hundred twelve".