27748197 has 16 divisors (see below), whose sum is σ = 41632000. Its totient is φ = 18263232.

The previous prime is 27748183. The next prime is 27748297. The reversal of 27748197 is 79184772.

It is a happy number.

It is not a de Polignac number, because 27748197 - 2¹⁰ = 27747173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27748297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4372 + ... + 8637.

It is an arithmetic number, because the mean of its divisors is an integer number (2602000).

Almost surely, 2^27748197 is an apocalyptic number.

27748197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

27748197 is a deficient number, since it is larger than the sum of its proper divisors (13883803).

27748197 is a wasteful number, since it uses less digits than its factorization.

27748197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13097 (or 13091 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 27748197 is about 5267.6557404599. The cubic root of 27748197 is about 302.7458902747.

The spelling of 27748197 in words is "twenty-seven million, seven hundred forty-eight thousand, one hundred ninety-seven".