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12745617248 = 257134376929
BaseRepresentation
bin10111101111011001…
…01010111101100000
31012220021010102221002
423313230222331200
5202100334222443
65504422451132
7630563646650
oct136754527540
935807112832
1012745617248
115450628981
122578593aa8
131281786470
1488ca6c360
154e8e542b8
hex2f7b2af60

12745617248 has 48 divisors (see below), whose sum is σ = 30883618080. Its totient is φ = 5042221056.

The previous prime is 12745617191. The next prime is 12745617301. The reversal of 12745617248 is 84271654721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2185553 + ... + 2191376.

It is an arithmetic number, because the mean of its divisors is an integer number (643408710).

Almost surely, 212745617248 is an apocalyptic number.

It is an amenable number.

12745617248 is an abundant number, since it is smaller than the sum of its proper divisors (18138000832).

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

12745617248 is a wasteful number, since it uses less digits than its factorization.

12745617248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376959 (or 4376951 counting only the distinct ones).

The product of its digits is 752640, while the sum is 47.

The spelling of 12745617248 in words is "twelve billion, seven hundred forty-five million, six hundred seventeen thousand, two hundred forty-eight".

Divisors: 1 2 4 7 8 13 14 16 26 28 32 52 56 91 104 112 182 208 224 364 416 728 1456 2912 4376929 8753858 17507716 30638503 35015432 56900077 61277006 70030864 113800154 122554012 140061728 227600308 245108024 398300539 455200616 490216048 796601078 910401232 980432096 1593202156 1820802464 3186404312 6372808624 12745617248