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1128513 = 3376171
BaseRepresentation
bin100010011100001000001
32010100000210
410103201001
5242103023
640104333
712410061
oct4234101
92110023
101128513
11700961
124650a9
13306879
142153a1
15174593
hex113841

1128513 has 4 divisors (see below), whose sum is σ = 1504688. Its totient is φ = 752340.

The previous prime is 1128509. The next prime is 1128521. The reversal of 1128513 is 3158211.

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 not a de Polignac number, because 1128513 - 22 = 1128509 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1128513.

It is not an unprimeable number, because it can be changed into a prime (1128503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188083 + ... + 188088.

It is an arithmetic number, because the mean of its divisors is an integer number (376172).

21128513 is an apocalyptic number.

It is an amenable number.

1128513 is a deficient number, since it is larger than the sum of its proper divisors (376175).

1128513 is an equidigital number, since it uses as much as digits as its factorization.

1128513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376174.

The product of its digits is 240, while the sum is 21.

The square root of 1128513 is about 1062.3149250575. The cubic root of 1128513 is about 104.1123354713.

Adding to 1128513 its product of digits (240), we get a triangular number (1128753 = T1502).

The spelling of 1128513 in words is "one million, one hundred twenty-eight thousand, five hundred thirteen".

Divisors: 1 3 376171 1128513