270381 has 4 divisors (see below), whose sum is σ = 360512. Its totient is φ = 180252.

The previous prime is 270379. The next prime is 270407. The reversal of 270381 is 183072.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 270381 - 2¹ = 270379 is a prime.

It is a super-2 number, since 2×270381² = 146211770322, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45061 + ... + 45066.

It is an arithmetic number, because the mean of its divisors is an integer number (90128).

2²⁷⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

270381 is a deficient number, since it is larger than the sum of its proper divisors (90131).

270381 is an equidigital number, since it uses as much as digits as its factorization.

270381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90130.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 270381 is about 519.9817304483. The cubic root of 270381 is about 64.6634278795.

The spelling of 270381 in words is "two hundred seventy thousand, three hundred eighty-one".