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18034031928 = 23311241283447
BaseRepresentation
bin10000110010111010…
…010111110100111000
31201112211012202001110
4100302322113310320
5243413203010203
612141255520320
71205620512363
oct206272276470
951484182043
1018034031928
117714817120
1235b36890a0
1319152b7813
14c311690da
1570837bd03
hex432e97d38

18034031928 has 64 divisors (see below), whose sum is σ = 49387979520. Its totient is φ = 5442163200.

The previous prime is 18034031927. The next prime is 18034031957. The reversal of 18034031928 is 82913043081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18034031927) 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, 78100 + ... + 205347.

It is an arithmetic number, because the mean of its divisors is an integer number (771687180).

Almost surely, 218034031928 is an apocalyptic number.

It is an amenable number.

18034031928 is an abundant number, since it is smaller than the sum of its proper divisors (31353947592).

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

18034031928 is a wasteful number, since it uses less digits than its factorization.

18034031928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283708 (or 283704 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 18034031928 in words is "eighteen billion, thirty-four million, thirty-one thousand, nine hundred twenty-eight".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 241 264 482 723 964 1446 1928 2651 2892 5302 5784 7953 10604 15906 21208 31812 63624 283447 566894 850341 1133788 1700682 2267576 3117917 3401364 6235834 6802728 9353751 12471668 18707502 24943336 37415004 68310727 74830008 136621454 204932181 273242908 409864362 546485816 751417997 819728724 1502835994 1639457448 2254253991 3005671988 4508507982 6011343976 9017015964 18034031928