Search a number
-
+
27854137 = 131212627
BaseRepresentation
bin110101001000…
…0010100111001
31221102010200201
41222100110321
524112313022
62433002201
7455520253
oct152202471
957363621
1027854137
11147a5253
1293b3361
135a0334c
1439b0cd3
1526a3127
hex1a90539

27854137 has 4 divisors (see below), whose sum is σ = 28066896. Its totient is φ = 27641380.

The previous prime is 27854069. The next prime is 27854149. The reversal of 27854137 is 73145872.

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 27854137 - 27 = 27854009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27854096 and 27854105.

It is not an unprimeable number, because it can be changed into a prime (27854837) 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 3 ways as a sum of consecutive naturals, for example, 106183 + ... + 106444.

It is an arithmetic number, because the mean of its divisors is an integer number (7016724).

Almost surely, 227854137 is an apocalyptic number.

It is an amenable number.

27854137 is a deficient number, since it is larger than the sum of its proper divisors (212759).

27854137 is a wasteful number, since it uses less digits than its factorization.

27854137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212758.

The product of its digits is 47040, while the sum is 37.

The square root of 27854137 is about 5277.7018672903. The cubic root of 27854137 is about 303.1306860732.

The spelling of 27854137 in words is "twenty-seven million, eight hundred fifty-four thousand, one hundred thirty-seven".

Divisors: 1 131 212627 27854137