27973497 has 8 divisors (see below), whose sum is σ = 38919744. Its totient is φ = 17838128.

The previous prime is 27973471. The next prime is 27973499. The reversal of 27973497 is 79437972.

It is a happy number.

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 27973497 - 2¹⁹ = 27449209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27973499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202638 + ... + 202775.

It is an arithmetic number, because the mean of its divisors is an integer number (4864968).

Almost surely, 2^27973497 is an apocalyptic number.

It is an amenable number.

27973497 is a deficient number, since it is larger than the sum of its proper divisors (10946247).

27973497 is a wasteful number, since it uses less digits than its factorization.

27973497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405439.

The product of its digits is 666792, while the sum is 48.

The square root of 27973497 is about 5288.9977311396. The cubic root of 27973497 is about 303.5630589460.

The spelling of 27973497 in words is "twenty-seven million, nine hundred seventy-three thousand, four hundred ninety-seven".