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1768080 = 243553139
BaseRepresentation
bin110101111101010010000
310022211100110
412233222100
5423034310
6101521320
721012516
oct6575220
93284313
101768080
11aa8426
12713240
1349ba02
143404b6
1524dd20
hex1afa90

1768080 has 80 divisors (see below), whose sum is σ = 5624640. Its totient is φ = 459264.

The previous prime is 1768069. The next prime is 1768127. The reversal of 1768080 is 808671.

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

It is a super-2 number, since 2×17680802 = 6252213772800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12651 + ... + 12789.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

21768080 is an apocalyptic number.

1768080 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 1768080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2812320).

1768080 is an abundant number, since it is smaller than the sum of its proper divisors (3856560).

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

1768080 is a wasteful number, since it uses less digits than its factorization.

1768080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 1768080 is about 1329.6916935892. The cubic root of 1768080 is about 120.9206957068.

It can be divided in two parts, 176 and 8080, that added together give a triangular number (8256 = T128).

The spelling of 1768080 in words is "one million, seven hundred sixty-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 53 60 80 106 120 139 159 212 240 265 278 318 417 424 530 556 636 695 795 834 848 1060 1112 1272 1390 1590 1668 2085 2120 2224 2544 2780 3180 3336 4170 4240 5560 6360 6672 7367 8340 11120 12720 14734 16680 22101 29468 33360 36835 44202 58936 73670 88404 110505 117872 147340 176808 221010 294680 353616 442020 589360 884040 1768080