27945297 has 32 divisors (see below), whose sum is σ = 44323200. Its totient is φ = 17339904.

The previous prime is 27945283. The next prime is 27945317. The reversal of 27945297 is 79254972.

It is not a de Polignac number, because 27945297 - 2¹² = 27941201 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27945217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48829 + ... + 49397.

It is an arithmetic number, because the mean of its divisors is an integer number (1385100).

Almost surely, 2^27945297 is an apocalyptic number.

27945297 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

27945297 is a deficient number, since it is larger than the sum of its proper divisors (16377903).

27945297 is a wasteful number, since it uses less digits than its factorization.

27945297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 696 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 27945297 is about 5286.3311474027. The cubic root of 27945297 is about 303.4610176404.

The spelling of 27945297 in words is "twenty-seven million, nine hundred forty-five thousand, two hundred ninety-seven".