27732971 has 6 divisors (see below), whose sum is σ = 32260860. Its totient is φ = 23771076.

The previous prime is 27732959. The next prime is 27732997. The reversal of 27732971 is 17923772.

It is not a de Polignac number, because 27732971 - 2⁶ = 27732907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27732911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282941 + ... + 283038.

It is an arithmetic number, because the mean of its divisors is an integer number (5376810).

Almost surely, 2^27732971 is an apocalyptic number.

27732971 is a deficient number, since it is larger than the sum of its proper divisors (4527889).

27732971 is an equidigital number, since it uses as much as digits as its factorization.

27732971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565993 (or 565986 counting only the distinct ones).

The product of its digits is 37044, while the sum is 38.

The square root of 27732971 is about 5266.2103072323. The cubic root of 27732971 is about 302.6905058677.

The spelling of 27732971 in words is "twenty-seven million, seven hundred thirty-two thousand, nine hundred seventy-one".