27730756 has 9 divisors (see below), whose sum is σ = 48547261. Its totient is φ = 13860112.

The previous prime is 27730751. The next prime is 27730763. The reversal of 27730756 is 65703772.

The square root of 27730756 is 5266.

It is a perfect power (a square), and thus also a powerful number.

27730756 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in only one way, i.e., 4536900 + 23193856 = 2130^2 + 4816^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27730751) 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 2 ways as a sum of consecutive naturals, for example, 9216 + ... + 11848.

Almost surely, 2^27730756 is an apocalyptic number.

27730756 is the 5266-th square number.

It is an amenable number.

27730756 is a deficient number, since it is larger than the sum of its proper divisors (20816505).

27730756 is an frugal number, since it uses more digits than its factorization.

27730756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270 (or 2635 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 37.

The cubic root of 27730756 is about 302.6824471407.

The spelling of 27730756 in words is "twenty-seven million, seven hundred thirty thousand, seven hundred fifty-six".