270391 has 8 divisors (see below), whose sum is σ = 301824. Its totient is φ = 240120.

The previous prime is 270379. The next prime is 270407. The reversal of 270391 is 193072.

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 270391 - 2⁹ = 269879 is a prime.

It is a super-2 number, since 2×270391² = 146222585762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 778.

It is an arithmetic number, because the mean of its divisors is an integer number (37728).

2²⁷⁰³⁹¹ is an apocalyptic number.

270391 is a deficient number, since it is larger than the sum of its proper divisors (31433).

270391 is a wasteful number, since it uses less digits than its factorization.

270391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 270391 is about 519.9913460818. The cubic root of 270391 is about 64.6642250587.

It can be divided in two parts, 270 and 391, that multiplied together give a triangular number (105570 = T₄₅₉).

The spelling of 270391 in words is "two hundred seventy thousand, three hundred ninety-one".