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12741290 = 251274129
BaseRepresentation
bin110000100110…
…101010101010
3212222022202122
4300212222222
511230210130
61133031242
7213204422
oct60465252
925868678
1012741290
1172127a1
124325522
132841533
141999482
1511ba2e5
hexc26aaa

12741290 has 8 divisors (see below), whose sum is σ = 22934340. Its totient is φ = 5096512.

The previous prime is 12741263. The next prime is 12741293. The reversal of 12741290 is 9214721.

It can be written as a sum of positive squares in 2 ways, for example, as 10817521 + 1923769 = 3289^2 + 1387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12741293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637055 + ... + 637074.

Almost surely, 212741290 is an apocalyptic number.

12741290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12741290 is a deficient number, since it is larger than the sum of its proper divisors (10193050).

12741290 is a wasteful number, since it uses less digits than its factorization.

12741290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274136.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 12741290 is about 3569.4943619510. The cubic root of 12741290 is about 233.5632269358.

It can be divided in two parts, 12741 and 290, that added together give a palindrome (13031).

The spelling of 12741290 in words is "twelve million, seven hundred forty-one thousand, two hundred ninety".

Divisors: 1 2 5 10 1274129 2548258 6370645 12741290