27793381 has 8 divisors (see below), whose sum is σ = 34651584. Its totient is φ = 21657120.

The previous prime is 27793379. The next prime is 27793393. The reversal of 27793381 is 18339772.

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 27793381 - 2¹ = 27793379 is a prime.

It is a super-2 number, since 2×27793381² = 1544944054822322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27793301) 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, 180400 + ... + 180553.

It is an arithmetic number, because the mean of its divisors is an integer number (4331448).

Almost surely, 2^27793381 is an apocalyptic number.

It is an amenable number.

27793381 is a deficient number, since it is larger than the sum of its proper divisors (6858203).

27793381 is a wasteful number, since it uses less digits than its factorization.

27793381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360971.

The product of its digits is 63504, while the sum is 40.

The square root of 27793381 is about 5271.9428107672. The cubic root of 27793381 is about 302.9101273973.

The spelling of 27793381 in words is "twenty-seven million, seven hundred ninety-three thousand, three hundred eighty-one".