27947738 has 24 divisors (see below), whose sum is σ = 52519572. Its totient is φ = 11055744.

The previous prime is 27947729. The next prime is 27947743. The reversal of 27947738 is 83774972.

It can be written as a sum of positive squares in 2 ways, for example, as 24078649 + 3869089 = 4907^2 + 1967^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27947692 and 27947701.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9695 + ... + 12242.

Almost surely, 2^27947738 is an apocalyptic number.

27947738 is a deficient number, since it is larger than the sum of its proper divisors (24571834).

27947738 is a wasteful number, since it uses less digits than its factorization.

27947738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21966 (or 21959 counting only the distinct ones).

The product of its digits is 592704, while the sum is 47.

The square root of 27947738 is about 5286.5620208222. The cubic root of 27947738 is about 303.4698530779.

The spelling of 27947738 in words is "twenty-seven million, nine hundred forty-seven thousand, seven hundred thirty-eight".