27768290 has 48 divisors (see below), whose sum is σ = 56105784. Its totient is φ = 9884160.

The previous prime is 27768271. The next prime is 27768317. The reversal of 27768290 is 9286772.

It can be written as a sum of positive squares in 4 ways, for example, as 19651489 + 8116801 = 4433^2 + 2849^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63914 + ... + 64346.

Almost surely, 2^27768290 is an apocalyptic number.

27768290 is an abundant number, since it is smaller than the sum of its proper divisors (28337494).

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

27768290 is a wasteful number, since it uses less digits than its factorization.

27768290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 27768290 is about 5269.5626004442. The cubic root of 27768290 is about 302.8189473394.

It can be divided in two parts, 277682 and 90, that added together give a palindrome (277772).

The spelling of 27768290 in words is "twenty-seven million, seven hundred sixty-eight thousand, two hundred ninety".