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12715430 = 2571389157
BaseRepresentation
bin110000100000…
…010110100110
3212221000021212
4300200112212
511223343210
61132311422
7213036140
oct60402646
925830255
1012715430
1171a5322
124312572
132832830
14198dc90
1511b2805
hexc205a6

12715430 has 64 divisors (see below), whose sum is σ = 28667520. Its totient is φ = 3953664.

The previous prime is 12715403. The next prime is 12715433. The reversal of 12715430 is 3451721.

It is a junction number, because it is equal to n+sod(n) for n = 12715396 and 12715405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12715433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80912 + ... + 81068.

It is an arithmetic number, because the mean of its divisors is an integer number (447930).

Almost surely, 212715430 is an apocalyptic number.

12715430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12715430 is an abundant number, since it is smaller than the sum of its proper divisors (15952090).

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

12715430 is a wasteful number, since it uses less digits than its factorization.

12715430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 12715430 is about 3565.8701602835. The cubic root of 12715430 is about 233.4051049055.

The spelling of 12715430 in words is "twelve million, seven hundred fifteen thousand, four hundred thirty".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 89 91 130 157 178 182 314 445 455 623 785 890 910 1099 1157 1246 1570 2041 2198 2314 3115 4082 5495 5785 6230 8099 10205 10990 11570 13973 14287 16198 20410 27946 28574 40495 69865 71435 80990 97811 139730 142870 181649 195622 363298 489055 908245 978110 1271543 1816490 2543086 6357715 12715430