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28057743714 = 237111330715217
BaseRepresentation
bin11010001000010111…
…110011000101100010
32200102101121001122010
4122020113303011202
5424430240244324
620520050453350
72012203613040
oct321027630542
980371531563
1028057743714
1110998957150
125530594256
132851b87a20
141502501390
15ae3370829
hex6885f3162

28057743714 has 128 divisors (see below), whose sum is σ = 75594258432. Its totient is φ = 6704778240.

The previous prime is 28057743673. The next prime is 28057743731. The reversal of 28057743714 is 41734775082.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1836234 + ... + 1851450.

It is an arithmetic number, because the mean of its divisors is an integer number (590580144).

Almost surely, 228057743714 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28057743714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37797129216).

28057743714 is an abundant number, since it is smaller than the sum of its proper divisors (47536514718).

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

28057743714 is a wasteful number, since it uses less digits than its factorization.

28057743714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15560.

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 28057743714 in words is "twenty-eight billion, fifty-seven million, seven hundred forty-three thousand, seven hundred fourteen".

Divisors: 1 2 3 6 7 11 13 14 21 22 26 33 39 42 66 77 78 91 143 154 182 231 273 286 307 429 462 546 614 858 921 1001 1842 2002 2149 3003 3377 3991 4298 6006 6447 6754 7982 10131 11973 12894 15217 20262 23639 23946 27937 30434 43901 45651 47278 55874 70917 83811 87802 91302 106519 131703 141834 167387 167622 197821 213038 263406 307307 319557 334774 395642 502161 593463 614614 639114 921921 1004322 1171709 1186926 1384747 1843842 2176031 2343418 2769494 3515127 4154241 4352062 4671619 6528093 7030254 8308482 9343238 13056186 14014857 15232217 28029714 30464434 32701333 45696651 51387809 60731047 65402666 91393302 98103999 102775618 121462094 154163427 182193141 196207998 308326854 359714663 364386282 425117329 668041517 719429326 850234658 1079143989 1275351987 1336083034 2004124551 2158287978 2550703974 4008249102 4676290619 9352581238 14028871857 28057743714