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13128713046 = 2321763296779
BaseRepresentation
bin11000011101000100…
…00100001101010110
31020212221222201120100
430032202010031112
5203341422304141
610010425514530
7643225135221
oct141642041526
936787881510
1013128713046
1156278a8479
122664942a46
131312c59777
148c78b25b8
1551c8c90b6
hex30e884356

13128713046 has 48 divisors (see below), whose sum is σ = 30128014800. Its totient is φ = 4117553664.

The previous prime is 13128713027. The next prime is 13128713077. The reversal of 13128713046 is 64031782131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13128713046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1933285 + ... + 1940063.

It is an arithmetic number, because the mean of its divisors is an integer number (627666975).

Almost surely, 213128713046 is an apocalyptic number.

13128713046 is an abundant number, since it is smaller than the sum of its proper divisors (16999301754).

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

13128713046 is a wasteful number, since it uses less digits than its factorization.

13128713046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13133 (or 13130 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 13128713046 in words is "thirteen billion, one hundred twenty-eight million, seven hundred thirteen thousand, forty-six".

Divisors: 1 2 3 6 9 17 18 34 51 102 153 306 6329 6779 12658 13558 18987 20337 37974 40674 56961 61011 107593 113922 115243 122022 215186 230486 322779 345729 645558 691458 968337 1037187 1936674 2074374 42904291 85808582 128712873 257425746 386138619 729372947 772277238 1458745894 2188118841 4376237682 6564356523 13128713046