Search a number
-
+
12130300240 = 245151628753
BaseRepresentation
bin10110100110000010…
…11011000101010000
31011022101022002200021
423103001123011100
5144320324101430
65323402233224
7606412564552
oct132301330520
934271262607
1012130300240
115165269123
1224264b5814
1311b4156b66
148310594d2
154aee0d07a
hex2d305b150

12130300240 has 20 divisors (see below), whose sum is σ = 28202948244. Its totient is φ = 4852120064.

The previous prime is 12130300223. The next prime is 12130300267. The reversal of 12130300240 is 4200303121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8506741824 + 3623558416 = 92232^2 + 60196^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75814297 + ... + 75814456.

Almost surely, 212130300240 is an apocalyptic number.

12130300240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12130300240 is an abundant number, since it is smaller than the sum of its proper divisors (16072648004).

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

12130300240 is a wasteful number, since it uses less digits than its factorization.

12130300240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151628766 (or 151628760 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12130300240 its reverse (4200303121), we get a palindrome (16330603361).

The spelling of 12130300240 in words is "twelve billion, one hundred thirty million, three hundred thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 151628753 303257506 606515012 758143765 1213030024 1516287530 2426060048 3032575060 6065150120 12130300240