27797290 has 16 divisors (see below), whose sum is σ = 50552712. Its totient is φ = 11003904.

The previous prime is 27797267. The next prime is 27797299. The reversal of 27797290 is 9279772.

It can be written as a sum of positive squares in 4 ways, for example, as 17614809 + 10182481 = 4197^2 + 3191^2 .

It is not an unprimeable number, because it can be changed into a prime (27797299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13359 + ... + 15298.

Almost surely, 2^27797290 is an apocalyptic number.

27797290 is a deficient number, since it is larger than the sum of its proper divisors (22755422).

27797290 is a wasteful number, since it uses less digits than its factorization.

27797290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28761.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 27797290 is about 5272.3135339242. The cubic root of 27797290 is about 302.9243276630.

The spelling of 27797290 in words is "twenty-seven million, seven hundred ninety-seven thousand, two hundred ninety".