[go: up one dir, main page]

Search a number
-
+
1288873 is a prime number
BaseRepresentation
bin100111010101010101001
32102111000001
410322222221
5312220443
643343001
713645435
oct4725251
92374001
101288873
11800393
12521a61
13361861
142579c5
151a6d4d
hex13aaa9

1288873 has 2 divisors, whose sum is σ = 1288874. Its totient is φ = 1288872.

The previous prime is 1288871. The next prime is 1288877. The reversal of 1288873 is 3788821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1283689 + 5184 = 1133^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288873 - 21 = 1288871 is a prime.

It is a super-2 number, since 2×12888732 = 3322387220258, which contains 22 as substring.

Together with 1288871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1288871) 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 as a sum of consecutive naturals, namely, 644436 + 644437.

It is an arithmetic number, because the mean of its divisors is an integer number (644437).

21288873 is an apocalyptic number.

It is an amenable number.

1288873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288873 is an equidigital number, since it uses as much as digits as its factorization.

1288873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 37.

The square root of 1288873 is about 1135.2854266659. The cubic root of 1288873 is about 108.8270128735.

The spelling of 1288873 in words is "one million, two hundred eighty-eight thousand, eight hundred seventy-three".