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27894941 = 30790863
BaseRepresentation
bin110101001101…
…0010010011101
31221111012122222
41222122102131
524120114231
62433515125
7456050234
oct152322235
957435588
1027894941
1114822978
129412aa5
135a18aa9
1439c1b1b
1526b027b
hex1a9a49d

27894941 has 4 divisors (see below), whose sum is σ = 27986112. Its totient is φ = 27803772.

The previous prime is 27894931. The next prime is 27894949. The reversal of 27894941 is 14949872.

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 a cyclic number.

It is not a de Polignac number, because 27894941 - 26 = 27894877 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27894892 and 27894901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27894949) 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 3 ways as a sum of consecutive naturals, for example, 45125 + ... + 45738.

It is an arithmetic number, because the mean of its divisors is an integer number (6996528).

Almost surely, 227894941 is an apocalyptic number.

It is an amenable number.

27894941 is a deficient number, since it is larger than the sum of its proper divisors (91171).

27894941 is an equidigital number, since it uses as much as digits as its factorization.

27894941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91170.

The product of its digits is 145152, while the sum is 44.

The square root of 27894941 is about 5281.5661503005. The cubic root of 27894941 is about 303.2786342888.

The spelling of 27894941 in words is "twenty-seven million, eight hundred ninety-four thousand, nine hundred forty-one".

Divisors: 1 307 90863 27894941