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12288870100 = 22521323410999
BaseRepresentation
bin10110111000111100…
…10100011011010100
31011201102200021122001
423130132110123110
5200131422320400
65351225045044
7613346446423
oct133436243324
934642607561
1012288870100
115236823aa1
12246b626784
13120ac66690
148481352ba
154bdcd1a6a
hex2dc7946d4

12288870100 has 72 divisors (see below), whose sum is σ = 29966832000. Its totient is φ = 4340138880.

The previous prime is 12288870091. The next prime is 12288870101. The reversal of 12288870100 is 107888221.

It is a self number, because there is not a number n which added to its sum of digits gives 12288870100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12288870101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175600 + ... + 235399.

It is an arithmetic number, because the mean of its divisors is an integer number (416206000).

Almost surely, 212288870100 is an apocalyptic number.

12288870100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12288870100 is an abundant number, since it is smaller than the sum of its proper divisors (17677961900).

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

12288870100 is a wasteful number, since it uses less digits than its factorization.

12288870100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411049 (or 411042 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 37.

The spelling of 12288870100 in words is "twelve billion, two hundred eighty-eight million, eight hundred seventy thousand, one hundred".

Divisors: 1 2 4 5 10 13 20 23 25 26 46 50 52 65 92 100 115 130 230 260 299 325 460 575 598 650 1150 1196 1300 1495 2300 2990 5980 7475 14950 29900 410999 821998 1643996 2054995 4109990 5342987 8219980 9452977 10274975 10685974 18905954 20549950 21371948 26714935 37811908 41099900 47264885 53429870 94529770 106859740 122888701 133574675 189059540 236324425 245777402 267149350 472648850 491554804 534298700 614443505 945297700 1228887010 2457774020 3072217525 6144435050 12288870100