27670243 has 4 divisors (see below), whose sum is σ = 27688600. Its totient is φ = 27651888.

The previous prime is 27670241. The next prime is 27670261. The reversal of 27670243 is 34207672.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27670243 - 2¹ = 27670241 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (27670241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6693 + ... + 10006.

It is an arithmetic number, because the mean of its divisors is an integer number (6922150).

Almost surely, 2^27670243 is an apocalyptic number.

27670243 is a deficient number, since it is larger than the sum of its proper divisors (18357).

27670243 is a wasteful number, since it uses less digits than its factorization.

27670243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18356.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 27670243 is about 5260.2512297418. The cubic root of 27670243 is about 302.4621194284.

The spelling of 27670243 in words is "twenty-seven million, six hundred seventy thousand, two hundred forty-three".