27721712 has 20 divisors (see below), whose sum is σ = 53868576. Its totient is φ = 13820160.

The previous prime is 27721711. The next prime is 27721721. The reversal of 27721712 is 21712772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27721711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3512 + ... + 8232.

Almost surely, 2^27721712 is an apocalyptic number.

It is an amenable number.

27721712 is a deficient number, since it is larger than the sum of its proper divisors (26146864).

27721712 is a wasteful number, since it uses less digits than its factorization.

27721712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096 (or 5090 counting only the distinct ones).

The product of its digits is 2744, while the sum is 29.

The square root of 27721712 is about 5265.1412136808. The cubic root of 27721712 is about 302.6495383408.

The spelling of 27721712 in words is "twenty-seven million, seven hundred twenty-one thousand, seven hundred twelve".