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12708107140 = 2253161933113
BaseRepresentation
bin10111101010111011…
…00101001110000100
31012210122112201201211
423311131211032010
5202011233412030
65501002501204
7626630062021
oct136535451604
935718481654
1012708107140
115431438a93
122567b04804
131276a82031
14887aa6548
154e59e512a
hex2f5765384

12708107140 has 48 divisors (see below), whose sum is σ = 27593233920. Its totient is φ = 4911171840.

The previous prime is 12708107123. The next prime is 12708107141. The reversal of 12708107140 is 4170180721.

It is a super-2 number, since 2×127081071402 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (12708107141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367224 + ... + 400336.

It is an arithmetic number, because the mean of its divisors is an integer number (574859040).

Almost surely, 212708107140 is an apocalyptic number.

12708107140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12708107140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13796616960).

12708107140 is an abundant number, since it is smaller than the sum of its proper divisors (14885126780).

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

12708107140 is a wasteful number, since it uses less digits than its factorization.

12708107140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33772 (or 33770 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 31.

Adding to 12708107140 its reverse (4170180721), we get a palindrome (16878287861).

The spelling of 12708107140 in words is "twelve billion, seven hundred eight million, one hundred seven thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 619 620 1238 2476 3095 6190 12380 19189 33113 38378 66226 76756 95945 132452 165565 191890 331130 383780 662260 1026503 2053006 4106012 5132515 10265030 20496947 20530060 40993894 81987788 102484735 204969470 409938940 635405357 1270810714 2541621428 3177026785 6354053570 12708107140