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208054944 = 2532898117
BaseRepresentation
bin11000110011010…
…10101010100000
3112111111021201200
430121222222200
5411230224234
632351201200
75104303116
oct1431525240
9474437650
10208054944
11a7494839
1259816200
1334147746
141d8bbab6
15133ead99
hexc66aaa0

208054944 has 72 divisors (see below), whose sum is σ = 598377780. Its totient is φ = 68563968.

The previous prime is 208054943. The next prime is 208054967. The reversal of 208054944 is 449450802.

It can be written as a sum of positive squares in 2 ways, for example, as 207014544 + 1040400 = 14388^2 + 1020^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 208054899 and 208054908.

It is not an unprimeable number, because it can be changed into a prime (208054943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21574 + ... + 29690.

Almost surely, 2208054944 is an apocalyptic number.

208054944 is a gapful number since it is divisible by the number (24) 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 208054944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299188890).

208054944 is an abundant number, since it is smaller than the sum of its proper divisors (390322836).

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

208054944 is a wasteful number, since it uses less digits than its factorization.

208054944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8222 (or 8211 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 208054944 is about 14424.1098165537. The cubic root of 208054944 is about 592.5513794039.

The spelling of 208054944 in words is "two hundred eight million, fifty-four thousand, nine hundred forty-four".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 89 96 144 178 267 288 356 534 712 801 1068 1424 1602 2136 2848 3204 4272 6408 8117 8544 12816 16234 24351 25632 32468 48702 64936 73053 97404 129872 146106 194808 259744 292212 389616 584424 722413 779232 1168848 1444826 2167239 2337696 2889652 4334478 5779304 6501717 8668956 11558608 13003434 17337912 23117216 26006868 34675824 52013736 69351648 104027472 208054944