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12514340 = 2251813457
BaseRepresentation
bin101111101111…
…010000100100
3212112210110002
4233233100210
511200424330
61124120432
7211240646
oct57572044
925483402
1012514340
117078233
124236118
132792147
14193a896
151172e45
hexbef424

12514340 has 24 divisors (see below), whose sum is σ = 26432952. Its totient is φ = 4976640.

The previous prime is 12514321. The next prime is 12514343. The reversal of 12514340 is 4341521.

It can be written as a sum of positive squares in 4 ways, for example, as 1478656 + 11035684 = 1216^2 + 3322^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12514343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1892 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (1101373).

Almost surely, 212514340 is an apocalyptic number.

12514340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12514340 is an abundant number, since it is smaller than the sum of its proper divisors (13918612).

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

12514340 is a wasteful number, since it uses less digits than its factorization.

12514340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647 (or 3645 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12514340 is about 3537.5613068893. The cubic root of 12514340 is about 232.1681549438.

Adding to 12514340 its reverse (4341521), we get a palindrome (16855861).

The spelling of 12514340 in words is "twelve million, five hundred fourteen thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 181 362 724 905 1810 3457 3620 6914 13828 17285 34570 69140 625717 1251434 2502868 3128585 6257170 12514340