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27941381 = 1319113123
BaseRepresentation
bin110101010010…
…1101000000101
31221120120100222
41222211220011
524123111011
62434514125
7456332516
oct152455005
957516328
1027941381
1114854856
129435945
135a33c80
1439d4a0d
1526bdddb
hex1aa5a05

27941381 has 8 divisors (see below), whose sum is σ = 31674720. Its totient is φ = 24434352.

The previous prime is 27941371. The next prime is 27941423. The reversal of 27941381 is 18314972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-27941381 is a prime.

It is a super-2 number, since 2×279413812 = 1561441544374322, 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 (27941321) 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 7 ways as a sum of consecutive naturals, for example, 56315 + ... + 56808.

It is an arithmetic number, because the mean of its divisors is an integer number (3959340).

Almost surely, 227941381 is an apocalyptic number.

It is an amenable number.

27941381 is a deficient number, since it is larger than the sum of its proper divisors (3733339).

27941381 is a wasteful number, since it uses less digits than its factorization.

27941381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113155.

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

The square root of 27941381 is about 5285.9607452194. The cubic root of 27941381 is about 303.4468422217.

The spelling of 27941381 in words is "twenty-seven million, nine hundred forty-one thousand, three hundred eighty-one".

Divisors: 1 13 19 247 113123 1470599 2149337 27941381