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127768960 = 2751118149
BaseRepresentation
bin1111001110110…
…01100110000000
322220102100001201
413213121212000
5230202101320
620402310544
73111006154
oct747314600
9286370051
10127768960
1166138790
1236958454
1320617147
1412d7d064
15b33c70a
hex79d9980

127768960 has 64 divisors (see below), whose sum is σ = 333234000. Its totient is φ = 46458880.

The previous prime is 127768951. The next prime is 127768969. The reversal of 127768960 is 69867721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (127768951) and next prime (127768969).

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 127768960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127768969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2035 + ... + 16114.

Almost surely, 2127768960 is an apocalyptic number.

127768960 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 127768960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166617000).

127768960 is an abundant number, since it is smaller than the sum of its proper divisors (205465040).

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

127768960 is a wasteful number, since it uses less digits than its factorization.

127768960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18179 (or 18167 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 127768960 is about 11303.4932653583. The cubic root of 127768960 is about 503.6650163375.

It can be divided in two parts, 12776 and 8960, that added together give a triangular number (21736 = T208).

The spelling of 127768960 in words is "one hundred twenty-seven million, seven hundred sixty-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 80 88 110 128 160 176 220 320 352 440 640 704 880 1408 1760 3520 7040 18149 36298 72596 90745 145192 181490 199639 290384 362980 399278 580768 725960 798556 998195 1161536 1451920 1597112 1996390 2323072 2903840 3194224 3992780 5807680 6388448 7985560 11615360 12776896 15971120 25553792 31942240 63884480 127768960