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127305472 = 287193739
BaseRepresentation
bin1111001011010…
…00011100000000
322212112210021111
413211220130000
5230042233342
620344333104
73104035660
oct745503400
9285483244
10127305472
1165951538
1236774194
13204b41a8
1412c9c1a0
15b29a217
hex7968700

127305472 has 72 divisors (see below), whose sum is σ = 305782400. Its totient is φ = 51674112.

The previous prime is 127305467. The next prime is 127305487. The reversal of 127305472 is 274503721.

It is a super-2 number, since 2×1273054722 = 32413366402285568, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 32179 + ... + 35917.

Almost surely, 2127305472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127305472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152891200).

127305472 is an abundant number, since it is smaller than the sum of its proper divisors (178476928).

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

127305472 is an equidigital number, since it uses as much as digits as its factorization.

127305472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781 (or 3767 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 127305472 is about 11282.9726579479. The cubic root of 127305472 is about 503.0552554686.

The spelling of 127305472 in words is "one hundred twenty-seven million, three hundred five thousand, four hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 19 28 32 38 56 64 76 112 128 133 152 224 256 266 304 448 532 608 896 1064 1216 1792 2128 2432 3739 4256 4864 7478 8512 14956 17024 26173 29912 34048 52346 59824 71041 104692 119648 142082 209384 239296 284164 418768 478592 497287 568328 837536 957184 994574 1136656 1675072 1989148 2273312 3350144 3978296 4546624 6700288 7956592 9093248 15913184 18186496 31826368 63652736 127305472