27946638 has 24 divisors (see below), whose sum is σ = 61457448. Its totient is φ = 9176112.

The previous prime is 27946631. The next prime is 27946649. The reversal of 27946638 is 83664972.

27946638 is a `hidden beast` number, since 2 + 7 + 9 + 4 + 6 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 27946593 and 27946602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27946631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10381 + ... + 12792.

It is an arithmetic number, because the mean of its divisors is an integer number (2560727).

Almost surely, 2^27946638 is an apocalyptic number.

27946638 is an abundant number, since it is smaller than the sum of its proper divisors (33510810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27946638 is a wasteful number, since it uses less digits than its factorization.

27946638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23248 (or 23245 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 27946638 is about 5286.4579824302. The cubic root of 27946638 is about 303.4658715843.

The spelling of 27946638 in words is "twenty-seven million, nine hundred forty-six thousand, six hundred thirty-eight".