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23678450642 = 27112329613779
BaseRepresentation
bin10110000011010110…
…000111101111010010
32021010012011220220102
4112003112013233102
5341443140410032
614513331212402
71465526336540
oct260326075722
967105156812
1023678450642
11a050960480
124709a47102
1323047c4b52
141208a56d90
15938b77362
hex583587bd2

23678450642 has 128 divisors (see below), whose sum is σ = 48596889600. Its totient is φ = 8378092800.

The previous prime is 23678450641. The next prime is 23678450687. The reversal of 23678450642 is 24605487632.

It is not an unprimeable number, because it can be changed into a prime (23678450641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6263909 + ... + 6267687.

It is an arithmetic number, because the mean of its divisors is an integer number (379663200).

Almost surely, 223678450642 is an apocalyptic number.

23678450642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23678450642 is an abundant number, since it is smaller than the sum of its proper divisors (24918438958).

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

23678450642 is a wasteful number, since it uses less digits than its factorization.

23678450642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3912.

The product of its (nonzero) digits is 1935360, while the sum is 47.

The spelling of 23678450642 in words is "twenty-three billion, six hundred seventy-eight million, four hundred fifty thousand, six hundred forty-two".

Divisors: 1 2 7 11 14 22 23 29 46 58 61 77 122 154 161 203 253 319 322 406 427 506 638 667 671 854 1334 1342 1403 1769 1771 2233 2806 3538 3542 3779 4466 4669 4697 7337 7558 9338 9394 9821 12383 14674 15433 19459 19642 24766 26453 30866 38918 40687 41569 51359 52906 81374 83138 86917 102718 108031 109591 136213 173834 216062 219182 230519 272426 284809 290983 447557 461038 569618 581966 608419 767137 895114 956087 1205501 1216838 1534274 1613633 1912174 2411002 2520593 2535709 3132899 3227266 5041186 5071418 5301937 6265798 6685051 6692609 8438507 10603874 13370102 13385218 16877014 17644151 17749963 27726523 35288302 35499926 37113559 46795357 55453046 58321307 73535561 74227118 93590714 116642614 147071122 153756173 194085661 307512346 388171322 408249149 514748927 816498298 1029497854 1076293211 1691317903 2152586422 3382635806 11839225321 23678450642