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12631502260 = 2251348582701
BaseRepresentation
bin10111100001110010…
…10110110110110100
31012121022101210121001
423300321112312310
5201332131033020
65445224533044
7625006666126
oct136071266664
935538353531
1012631502260
1153a2176673
122546321184
131263c400c0
1487b845216
154dde1250a
hex2f0e56db4

12631502260 has 24 divisors (see below), whose sum is σ = 28566628776. Its totient is φ = 4663939200.

The previous prime is 12631502251. The next prime is 12631502287. The reversal of 12631502260 is 6220513621.

It can be written as a sum of positive squares in 4 ways, for example, as 660078864 + 11971423396 = 25692^2 + 109414^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24291091 + ... + 24291610.

It is an arithmetic number, because the mean of its divisors is an integer number (1190276199).

Almost surely, 212631502260 is an apocalyptic number.

12631502260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12631502260 is an abundant number, since it is smaller than the sum of its proper divisors (15935126516).

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

12631502260 is a wasteful number, since it uses less digits than its factorization.

12631502260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48582723 (or 48582721 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 12631502260 in words is "twelve billion, six hundred thirty-one million, five hundred two thousand, two hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 48582701 97165402 194330804 242913505 485827010 631575113 971654020 1263150226 2526300452 3157875565 6315751130 12631502260