Search a number
-
+
1200030 = 2351317181
BaseRepresentation
bin100100100111110011110
32020222010120
410210332132
5301400110
641415410
713125426
oct4447636
92228116
101200030
1174a667
1249a566
133302a0
14233486
1518a870
hex124f9e

1200030 has 64 divisors (see below), whose sum is σ = 3302208. Its totient is φ = 276480.

The previous prime is 1200007. The next prime is 1200061. The reversal of 1200030 is 300021.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1199991 and 1200018.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6540 + ... + 6720.

It is an arithmetic number, because the mean of its divisors is an integer number (51597).

21200030 is an apocalyptic number.

1200030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651104).

1200030 is an abundant number, since it is smaller than the sum of its proper divisors (2102178).

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

1200030 is a wasteful number, since it uses less digits than its factorization.

1200030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 1200030 is about 1095.4588079887. The cubic root of 1200030 is about 106.2667424597.

Adding to 1200030 its reverse (300021), we get a palindrome (1500051).

Subtracting from 1200030 its reverse (300021), we obtain a palindrome (900009).

It can be divided in two parts, 12000 and 30, that multiplied together give a square (360000 = 6002).

The spelling of 1200030 in words is "one million, two hundred thousand, thirty".

Divisors: 1 2 3 5 6 10 13 15 17 26 30 34 39 51 65 78 85 102 130 170 181 195 221 255 362 390 442 510 543 663 905 1086 1105 1326 1810 2210 2353 2715 3077 3315 4706 5430 6154 6630 7059 9231 11765 14118 15385 18462 23530 30770 35295 40001 46155 70590 80002 92310 120003 200005 240006 400010 600015 1200030