27149381 has 12 divisors (see below), whose sum is σ = 32120640. Its totient is φ = 22874040.

The previous prime is 27149359. The next prime is 27149387. The reversal of 27149381 is 18394172.

It is not a de Polignac number, because 27149381 - 2¹⁰ = 27148357 is a prime.

It is a super-2 number, since 2×27149381² = 1474177777366322, 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 (27149387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1805 + ... + 7586.

It is an arithmetic number, because the mean of its divisors is an integer number (2676720).

Almost surely, 2^27149381 is an apocalyptic number.

It is an amenable number.

27149381 is a deficient number, since it is larger than the sum of its proper divisors (4971259).

27149381 is an equidigital number, since it uses as much as digits as its factorization.

27149381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464 (or 9457 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 27149381 is about 5210.5067891713. The cubic root of 27149381 is about 300.5522457546.

The spelling of 27149381 in words is "twenty-seven million, one hundred forty-nine thousand, three hundred eighty-one".