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57141760 = 2951317101
BaseRepresentation
bin1101100111111…
…0101000000000
310222112002202111
43121332220000
5104112014020
65400425104
71262461024
oct331765000
9128462674
1057141760
112a2894a5
1217178194
13bab8cc0
147836384
15503ad5a
hex367ea00

57141760 has 160 divisors (see below), whose sum is σ = 157771152. Its totient is φ = 19660800.

The previous prime is 57141757. The next prime is 57141761. The reversal of 57141760 is 6714175.

It can be written as a sum of positive squares in 8 ways, for example, as 38340864 + 18800896 = 6192^2 + 4336^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is not an unprimeable number, because it can be changed into a prime (57141761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565710 + ... + 565810.

Almost surely, 257141760 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 57141760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78885576).

57141760 is an abundant number, since it is smaller than the sum of its proper divisors (100629392).

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

57141760 is a wasteful number, since it uses less digits than its factorization.

57141760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 57141760 is about 7559.2168906574. The cubic root of 57141760 is about 385.1688919984.

The spelling of 57141760 in words is "fifty-seven million, one hundred forty-one thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 13 16 17 20 26 32 34 40 52 64 65 68 80 85 101 104 128 130 136 160 170 202 208 221 256 260 272 320 340 404 416 442 505 512 520 544 640 680 808 832 884 1010 1040 1088 1105 1280 1313 1360 1616 1664 1717 1768 2020 2080 2176 2210 2560 2626 2720 3232 3328 3434 3536 4040 4160 4352 4420 5252 5440 6464 6565 6656 6868 7072 8080 8320 8585 8704 8840 10504 10880 12928 13130 13736 14144 16160 16640 17170 17680 21008 21760 22321 25856 26260 27472 28288 32320 33280 34340 35360 42016 43520 44642 51712 52520 54944 56576 64640 68680 70720 84032 89284 105040 109888 111605 113152 129280 137360 141440 168064 178568 210080 219776 223210 258560 274720 282880 336128 357136 420160 439552 446420 549440 565760 672256 714272 840320 879104 892840 1098880 1428544 1680640 1785680 2197760 2857088 3361280 3571360 4395520 5714176 7142720 11428352 14285440 28570880 57141760