Search a number
-
+
1206560 = 2557541
BaseRepresentation
bin100100110100100100000
32021022002102
410212210200
5302102220
641505532
713153445
oct4464440
92238072
101206560
11754563
124a22a8
13333254
142359cc
1518c775
hex126920

1206560 has 24 divisors (see below), whose sum is σ = 2850876. Its totient is φ = 482560.

The previous prime is 1206553. The next prime is 1206563. The reversal of 1206560 is 656021.

It can be written as a sum of positive squares in 2 ways, for example, as 1106704 + 99856 = 1052^2 + 316^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1206563) 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, 3611 + ... + 3930.

21206560 is an apocalyptic number.

1206560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1206560 is an abundant number, since it is smaller than the sum of its proper divisors (1644316).

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

1206560 is an equidigital number, since it uses as much as digits as its factorization.

1206560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556 (or 7548 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1206560 is about 1098.4352507089. The cubic root of 1206560 is about 106.4591451368.

The spelling of 1206560 in words is "one million, two hundred six thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 7541 15082 30164 37705 60328 75410 120656 150820 241312 301640 603280 1206560