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2020741920 = 253251817753
BaseRepresentation
bin111100001110010…
…0001001100100000
312012211101022210100
41320130201030200
513114302220140
6532303302400
7101035010601
oct17034411440
95184338710
102020741920
1194772434a
124848aaa00
1326285a3a2
14152537da8
15bc60d530
hex78721320

2020741920 has 144 divisors (see below), whose sum is σ = 6934774392. Its totient is φ = 535818240.

The previous prime is 2020741901. The next prime is 2020741951. The reversal of 2020741920 is 291470202.

2020741920 is a `hidden beast` number, since 20 + 207 + 419 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1646087184 + 374654736 = 40572^2 + 19356^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256764 + ... + 264516.

Almost surely, 22020741920 is an apocalyptic number.

2020741920 is a gapful number since it is divisible by the number (20) 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 2020741920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3467387196).

2020741920 is an abundant number, since it is smaller than the sum of its proper divisors (4914032472).

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

2020741920 is a wasteful number, since it uses less digits than its factorization.

2020741920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955 (or 7944 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2020741920 is about 44952.6631024236. The cubic root of 2020741920 is about 1264.2616093132.

The spelling of 2020741920 in words is "two billion, twenty million, seven hundred forty-one thousand, nine hundred twenty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 90 96 120 144 160 180 181 240 288 360 362 480 543 720 724 905 1086 1440 1448 1629 1810 2172 2715 2896 3258 3620 4344 5430 5792 6516 7240 7753 8145 8688 10860 13032 14480 15506 16290 17376 21720 23259 26064 28960 31012 32580 38765 43440 46518 52128 62024 65160 69777 77530 86880 93036 116295 124048 130320 139554 155060 186072 232590 248096 260640 279108 310120 348885 372144 465180 558216 620240 697770 744288 930360 1116432 1240480 1395540 1403293 1860720 2232864 2791080 2806586 3721440 4209879 5582160 5613172 7016465 8419758 11164320 11226344 12629637 14032930 16839516 21049395 22452688 25259274 28065860 33679032 42098790 44905376 50518548 56131720 63148185 67358064 84197580 101037096 112263440 126296370 134716128 168395160 202074192 224526880 252592740 336790320 404148384 505185480 673580640 1010370960 2020741920