27890056 has 8 divisors (see below), whose sum is σ = 52293870. Its totient is φ = 13945024.

The previous prime is 27890041. The next prime is 27890059. The reversal of 27890056 is 65009872.

It can be written as a sum of positive squares in only one way, i.e., 21808900 + 6081156 = 4670^2 + 2466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 27889997 and 27890024.

It is not an unprimeable number, because it can be changed into a prime (27890059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1743121 + ... + 1743136.

Almost surely, 2^27890056 is an apocalyptic number.

It is an amenable number.

27890056 is a deficient number, since it is larger than the sum of its proper divisors (24403814).

27890056 is a wasteful number, since it uses less digits than its factorization.

27890056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486263 (or 3486259 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 27890056 is about 5281.1036725291. The cubic root of 27890056 is about 303.2609297330.

The spelling of 27890056 in words is "twenty-seven million, eight hundred ninety thousand, fifty-six".