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72153181230 = 23513688326879
BaseRepresentation
bin100001100110010101…
…0100010110000101110
320220020110221101020120
41003030222202300232
52140232203244410
653051405025410
75133010630644
oct1031452426056
9226213841216
1072153181230
1128666653a99
1211b97b55266
136a5b5658a0
1436c6987194
151d24680570
hex10ccaa2c2e

72153181230 has 64 divisors (see below), whose sum is σ = 186522255360. Its totient is φ = 17757542016.

The previous prime is 72153181229. The next prime is 72153181267. The reversal of 72153181230 is 3218135127.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72153181191 and 72153181200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2670931 + ... + 2697809.

It is an arithmetic number, because the mean of its divisors is an integer number (2914410240).

Almost surely, 272153181230 is an apocalyptic number.

72153181230 is an abundant number, since it is smaller than the sum of its proper divisors (114369074130).

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

72153181230 is a wasteful number, since it uses less digits than its factorization.

72153181230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33785.

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 72153181230 in words is "seventy-two billion, one hundred fifty-three million, one hundred eighty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 6883 13766 20649 26879 34415 41298 53758 68830 80637 89479 103245 134395 161274 178958 206490 268437 268790 349427 403185 447395 536874 698854 806370 894790 1048281 1342185 1747135 2096562 2684370 3494270 5241405 10482810 185008157 370016314 555024471 925040785 1110048942 1850081570 2405106041 2775122355 4810212082 5550244710 7215318123 12025530205 14430636246 24051060410 36076590615 72153181230