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1972080 = 243351183
BaseRepresentation
bin111100001011101110000
310201012012000
413201131300
51001101310
6110134000
722522335
oct7413560
93635160
101972080
111127720
127b1300
13540816
1439498c
1528e4c0
hex1e1770

1972080 has 160 divisors (see below), whose sum is σ = 7499520. Its totient is φ = 472320.

The previous prime is 1972079. The next prime is 1972093. The reversal of 1972080 is 802791.

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

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 31 ways as a sum of consecutive naturals, for example, 23719 + ... + 23801.

It is an arithmetic number, because the mean of its divisors is an integer number (46872).

21972080 is an apocalyptic number.

1972080 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 1972080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3749760).

1972080 is an abundant number, since it is smaller than the sum of its proper divisors (5527440).

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

1972080 is a wasteful number, since it uses less digits than its factorization.

1972080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1972080 is about 1404.3076585991. The cubic root of 1972080 is about 125.4030721987.

The spelling of 1972080 in words is "one million, nine hundred seventy-two thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 33 36 40 44 45 48 54 55 60 66 72 80 83 88 90 99 108 110 120 132 135 144 165 166 176 180 198 216 220 240 249 264 270 297 330 332 360 396 415 432 440 495 498 528 540 594 660 664 720 747 792 830 880 913 990 996 1080 1188 1245 1320 1328 1485 1494 1584 1660 1826 1980 1992 2160 2241 2376 2490 2640 2739 2970 2988 3320 3652 3735 3960 3984 4482 4565 4752 4980 5478 5940 5976 6640 7304 7470 7920 8217 8964 9130 9960 10956 11205 11880 11952 13695 14608 14940 16434 17928 18260 19920 21912 22410 23760 24651 27390 29880 32868 35856 36520 41085 43824 44820 49302 54780 59760 65736 73040 82170 89640 98604 109560 123255 131472 164340 179280 197208 219120 246510 328680 394416 493020 657360 986040 1972080