27400243 has 8 divisors (see below), whose sum is σ = 31243968. Its totient is φ = 23804544.

The previous prime is 27400211. The next prime is 27400267. The reversal of 27400243 is 34200472.

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 27400243 - 2⁵ = 27400211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27400643) 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, 61771 + ... + 62212.

It is an arithmetic number, because the mean of its divisors is an integer number (3905496).

Almost surely, 2^27400243 is an apocalyptic number.

27400243 is a deficient number, since it is larger than the sum of its proper divisors (3843725).

27400243 is a wasteful number, since it uses less digits than its factorization.

27400243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124013.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 27400243 is about 5234.5241426514. The cubic root of 27400243 is about 301.4751163657.

The spelling of 27400243 in words is "twenty-seven million, four hundred thousand, two hundred forty-three".