Search a number
-
+
1128744 = 233261257
BaseRepresentation
bin100010011100100101000
32010100100100
410103210220
5242104434
640105400
712410541
oct4234450
92110310
101128744
11701051
12465260
133069c6
142154c8
15174699
hex113928

1128744 has 48 divisors (see below), whose sum is σ = 3119220. Its totient is φ = 368640.

The previous prime is 1128737. The next prime is 1128761. The reversal of 1128744 is 4478211.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 900 = 1062^2 + 30^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4264 + ... + 4520.

21128744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559610).

1128744 is an abundant number, since it is smaller than the sum of its proper divisors (1990476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1128744 is a wasteful number, since it uses less digits than its factorization.

1128744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 323 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 1128744 is about 1062.4236443152. The cubic root of 1128744 is about 104.1194387151.

The spelling of 1128744 in words is "one million, one hundred twenty-eight thousand, seven hundred forty-four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 61 72 122 183 244 257 366 488 514 549 732 771 1028 1098 1464 1542 2056 2196 2313 3084 4392 4626 6168 9252 15677 18504 31354 47031 62708 94062 125416 141093 188124 282186 376248 564372 1128744