27716257 has 8 divisors (see below), whose sum is σ = 28737000. Its totient is φ = 26699904.

The previous prime is 27716251. The next prime is 27716279. The reversal of 27716257 is 75261772.

It can be written as a sum of positive squares in 4 ways, for example, as 6561 + 27709696 = 81^2 + 5264^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27716257 - 2¹¹ = 27714209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27716251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17119 + ... + 18667.

It is an arithmetic number, because the mean of its divisors is an integer number (3592125).

Almost surely, 2^27716257 is an apocalyptic number.

It is an amenable number.

27716257 is a deficient number, since it is larger than the sum of its proper divisors (1020743).

27716257 is a wasteful number, since it uses less digits than its factorization.

27716257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195.

The product of its digits is 41160, while the sum is 37.

The square root of 27716257 is about 5264.6231584036. The cubic root of 27716257 is about 302.6296855321.

The spelling of 27716257 in words is "twenty-seven million, seven hundred sixteen thousand, two hundred fifty-seven".