27947772 has 18 divisors (see below), whose sum is σ = 70645848. Its totient is φ = 9315912.

The previous prime is 27947761. The next prime is 27947789. The reversal of 27947772 is 27774972.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 388128 + ... + 388199.

Almost surely, 2^27947772 is an apocalyptic number.

It is an amenable number.

27947772 is an abundant number, since it is smaller than the sum of its proper divisors (42698076).

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

27947772 is a wasteful number, since it uses less digits than its factorization.

27947772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776337 (or 776332 counting only the distinct ones).

The product of its digits is 345744, while the sum is 45.

The square root of 27947772 is about 5286.5652365217. The cubic root of 27947772 is about 303.4699761406.

The spelling of 27947772 in words is "twenty-seven million, nine hundred forty-seven thousand, seven hundred seventy-two".