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105047990880 = 2535731264283
BaseRepresentation
bin110000111010101011…
…0010010001001100000
3101001010222022211220220
41201311112102021200
53210114241202010
6120131451003040
710406121122040
oct1416526221140
9331128284826
10105047990880
1140606941398
1218438439480
139ba15a20b1
145127655720
152aec4c0970
hex1875592260

105047990880 has 96 divisors (see below), whose sum is σ = 378172779264. Its totient is φ = 24010968576.

The previous prime is 105047990863. The next prime is 105047990881. The reversal of 105047990880 is 88099740501.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1050479908802 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105047990881) 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, 15628782 + ... + 15635501.

It is an arithmetic number, because the mean of its divisors is an integer number (3939299784).

Almost surely, 2105047990880 is an apocalyptic number.

105047990880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105047990880 is an abundant number, since it is smaller than the sum of its proper divisors (273124788384).

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

105047990880 is a wasteful number, since it uses less digits than its factorization.

105047990880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31264308 (or 31264300 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 51.

The spelling of 105047990880 in words is "one hundred five billion, forty-seven million, nine hundred ninety thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 80 84 96 105 112 120 140 160 168 210 224 240 280 336 420 480 560 672 840 1120 1680 3360 31264283 62528566 93792849 125057132 156321415 187585698 218849981 250114264 312642830 375171396 437699962 468964245 500228528 625285660 656549943 750342792 875399924 937928490 1000457056 1094249905 1250571320 1313099886 1500685584 1750799848 1875856980 2188499810 2501142640 2626199772 3001371168 3282749715 3501599696 3751713960 4376999620 5002285280 5252399544 6565499430 7003199392 7503427920 8753999240 10504799088 13130998860 15006855840 17507998480 21009598176 26261997720 35015996960 52523995440 105047990880