27786956 has 12 divisors (see below), whose sum is σ = 48668760. Its totient is φ = 13881600.

The previous prime is 27786953. The next prime is 27786991. The reversal of 27786956 is 65968772.

It is a super-2 number, since 2×27786956² = 1544229847491872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27786953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4235 + ... + 8573.

It is an arithmetic number, because the mean of its divisors is an integer number (4055730).

Almost surely, 2^27786956 is an apocalyptic number.

It is an amenable number.

27786956 is a deficient number, since it is larger than the sum of its proper divisors (20881804).

27786956 is a wasteful number, since it uses less digits than its factorization.

27786956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5944 (or 5942 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

The square root of 27786956 is about 5271.3334176468. Note that the first 3 decimals coincide. The cubic root of 27786956 is about 302.8867843388.

The spelling of 27786956 in words is "twenty-seven million, seven hundred eighty-six thousand, nine hundred fifty-six".