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103120000 = 27541289
BaseRepresentation
bin1100010010101…
…11110010000000
321012001001001021
412021113302000
5202344320000
614122115224
72361335254
oct611276200
9235031037
10103120000
1153232645
122a64bb14
1318496969
14d9a4264
1590be11a
hex6257c80

103120000 has 80 divisors (see below), whose sum is σ = 256909950. Its totient is φ = 41216000.

The previous prime is 103119949. The next prime is 103120001. The reversal of 103120000 is 21301.

It can be written as a sum of positive squares in 5 ways, for example, as 7706176 + 95413824 = 2776^2 + 9768^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (103120001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79356 + ... + 80644.

Almost surely, 2103120000 is an apocalyptic number.

103120000 is a gapful number since it is divisible by the number (10) 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 103120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128454975).

103120000 is an abundant number, since it is smaller than the sum of its proper divisors (153789950).

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

103120000 is an frugal number, since it uses more digits than its factorization.

103120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 103120000 is about 10154.8018198289. The cubic root of 103120000 is about 468.9367848204.

Adding to 103120000 its reverse (21301), we get a palindrome (103141301).

The spelling of 103120000 in words is "one hundred three million, one hundred twenty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 320 400 500 625 640 800 1000 1250 1289 1600 2000 2500 2578 3200 4000 5000 5156 6445 8000 10000 10312 12890 16000 20000 20624 25780 32225 40000 41248 51560 64450 80000 82496 103120 128900 161125 164992 206240 257800 322250 412480 515600 644500 805625 824960 1031200 1289000 1611250 2062400 2578000 3222500 4124800 5156000 6445000 10312000 12890000 20624000 25780000 51560000 103120000