27801239 has 8 divisors (see below), whose sum is σ = 30155328. Its totient is φ = 25527040.

The previous prime is 27801173. The next prime is 27801253. The reversal of 27801239 is 93210872.

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 27801239 - 2¹⁶ = 27735703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27801439) 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, 19247 + ... + 20640.

It is an arithmetic number, because the mean of its divisors is an integer number (3769416).

Almost surely, 2^27801239 is an apocalyptic number.

27801239 is a deficient number, since it is larger than the sum of its proper divisors (2354089).

27801239 is a wasteful number, since it uses less digits than its factorization.

27801239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39945.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 27801239 is about 5272.6880241486. The cubic root of 27801239 is about 302.9386718853.

The spelling of 27801239 in words is "twenty-seven million, eight hundred one thousand, two hundred thirty-nine".