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1276080 = 243513409
BaseRepresentation
bin100110111100010110000
32101211110020
410313202300
5311313310
643203440
713563231
oct4674260
92354406
101276080
117a1813
12516580
13358aa0
14253088
151a3170
hex1378b0

1276080 has 80 divisors (see below), whose sum is σ = 4270560. Its totient is φ = 313344.

The previous prime is 1276069. The next prime is 1276103. The reversal of 1276080 is 806721.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1276080.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2916 + ... + 3324.

It is an arithmetic number, because the mean of its divisors is an integer number (53382).

21276080 is an apocalyptic number.

1276080 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 1276080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2135280).

1276080 is an abundant number, since it is smaller than the sum of its proper divisors (2994480).

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

1276080 is a wasteful number, since it uses less digits than its factorization.

1276080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1276080 is about 1129.6371098720. The cubic root of 1276080 is about 108.4657526037.

The spelling of 1276080 in words is "one million, two hundred seventy-six thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 39 40 48 52 60 65 78 80 104 120 130 156 195 208 240 260 312 390 409 520 624 780 818 1040 1227 1560 1636 2045 2454 3120 3272 4090 4908 5317 6135 6544 8180 9816 10634 12270 15951 16360 19632 21268 24540 26585 31902 32720 42536 49080 53170 63804 79755 85072 98160 106340 127608 159510 212680 255216 319020 425360 638040 1276080