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12980250 = 23453641
BaseRepresentation
bin110001100001…
…000000011010
3220102110120000
4301201000122
511310332000
61142113430
7215221203
oct61410032
926373500
1012980250
117366288
12441b876
1328c622a
141a1c5aa
151216000
hexc6101a

12980250 has 80 divisors (see below), whose sum is σ = 36355176. Its totient is φ = 3456000.

The previous prime is 12980221. The next prime is 12980263. The reversal of 12980250 is 5208921.

It can be written as a sum of positive squares in 4 ways, for example, as 6765201 + 6215049 = 2601^2 + 2493^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19930 + ... + 20570.

Almost surely, 212980250 is an apocalyptic number.

12980250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12980250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18177588).

12980250 is an abundant number, since it is smaller than the sum of its proper divisors (23374926).

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

12980250 is an equidigital number, since it uses as much as digits as its factorization.

12980250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 12980250 is about 3602.8114022247. The cubic root of 12980250 is about 235.0143344206.

The spelling of 12980250 in words is "twelve million, nine hundred eighty thousand, two hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 27 30 45 50 54 75 81 90 125 135 150 162 225 250 270 375 405 450 641 675 750 810 1125 1282 1350 1923 2025 2250 3205 3375 3846 4050 5769 6410 6750 9615 10125 11538 16025 17307 19230 20250 28845 32050 34614 48075 51921 57690 80125 86535 96150 103842 144225 160250 173070 240375 259605 288450 432675 480750 519210 721125 865350 1298025 1442250 2163375 2596050 4326750 6490125 12980250