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108661950 = 232521971179
BaseRepresentation
bin1100111101000…
…00110010111110
321120110121011200
412132200302332
5210304140300
614441000330
72456416455
oct636406276
9246417150
10108661950
1156378371
12304830a6
1319687317
1410607b9c
159816200
hex67a0cbe

108661950 has 144 divisors (see below), whose sum is σ = 313372800. Its totient is φ = 26913600.

The previous prime is 108661937. The next prime is 108661951. The reversal of 108661950 is 59166801.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108661951) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 606961 + ... + 607139.

It is an arithmetic number, because the mean of its divisors is an integer number (2176200).

Almost surely, 2108661950 is an apocalyptic number.

108661950 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 108661950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156686400).

108661950 is an abundant number, since it is smaller than the sum of its proper divisors (204710850).

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

108661950 is a wasteful number, since it uses less digits than its factorization.

108661950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 108661950 is about 10424.1042780663. The cubic root of 108661950 is about 477.1912791131.

It can be divided in two parts, 1086 and 61950, that added together give a palindrome (63036).

The spelling of 108661950 in words is "one hundred eight million, six hundred sixty-one thousand, nine hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 19 25 30 38 45 50 57 71 75 90 95 114 142 150 171 179 190 213 225 285 342 355 358 426 450 475 537 570 639 710 855 895 950 1065 1074 1278 1349 1425 1611 1710 1775 1790 2130 2685 2698 2850 3195 3222 3401 3550 4047 4275 4475 5325 5370 6390 6745 6802 8055 8094 8550 8950 10203 10650 12141 12709 13425 13490 15975 16110 17005 20235 20406 24282 25418 26850 30609 31950 33725 34010 38127 40275 40470 51015 60705 61218 63545 67450 76254 80550 85025 101175 102030 114381 121410 127090 153045 170050 190635 202350 228762 241471 255075 303525 306090 317725 381270 482942 510150 571905 607050 635450 724413 765225 953175 1143810 1207355 1448826 1530450 1906350 2173239 2414710 2859525 3622065 4346478 5719050 6036775 7244130 10866195 12073550 18110325 21732390 36220650 54330975 108661950