27990466 has 48 divisors (see below), whose sum is σ = 52855416. Its totient is φ = 11042304.

The previous prime is 27990461. The next prime is 27990493. The reversal of 27990466 is 66409972.

It can be written as a sum of positive squares in 4 ways, for example, as 23668225 + 4322241 = 4865^2 + 2079^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (27990461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88140 + ... + 88456.

Almost surely, 2^27990466 is an apocalyptic number.

27990466 is a deficient number, since it is larger than the sum of its proper divisors (24864950).

27990466 is a wasteful number, since it uses less digits than its factorization.

27990466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 27990466 is about 5290.6016671074. The cubic root of 27990466 is about 303.6244279902.

The spelling of 27990466 in words is "twenty-seven million, nine hundred ninety thousand, four hundred sixty-six".