27743421 has 8 divisors (see below), whose sum is σ = 37319040. Its totient is φ = 18331712.

The previous prime is 27743399. The next prime is 27743437. The reversal of 27743421 is 12434772.

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 27743421 - 2¹⁰ = 27742397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27743461) 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, 40581 + ... + 41258.

It is an arithmetic number, because the mean of its divisors is an integer number (4664880).

Almost surely, 2^27743421 is an apocalyptic number.

It is an amenable number.

27743421 is a deficient number, since it is larger than the sum of its proper divisors (9575619).

27743421 is a wasteful number, since it uses less digits than its factorization.

27743421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81955.

The product of its digits is 9408, while the sum is 30.

The square root of 27743421 is about 5267.2023883652. The cubic root of 27743421 is about 302.7285198087.

The spelling of 27743421 in words is "twenty-seven million, seven hundred forty-three thousand, four hundred twenty-one".