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12705574386 = 2319071110433
BaseRepresentation
bin10111101010100111…
…11010110111110010
31012210110210001110010
423311103322313302
5202010111340021
65500432315350
7626566412631
oct136523726762
935713701403
1012705574386
11542aa690aa
1225670a2b56
1312763a626b
14887607518
154e5694976
hex2f54fadf2

12705574386 has 16 divisors (see below), whose sum is σ = 25424496864. Its totient is φ = 4232966784.

The previous prime is 12705574381. The next prime is 12705574423. The reversal of 12705574386 is 68347550721.

It is a super-2 number, since 2×127055743862 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12705574381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543775 + ... + 566658.

It is an arithmetic number, because the mean of its divisors is an integer number (1589031054).

Almost surely, 212705574386 is an apocalyptic number.

12705574386 is an abundant number, since it is smaller than the sum of its proper divisors (12718922478).

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

12705574386 is a wasteful number, since it uses less digits than its factorization.

12705574386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112345.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 12705574386 in words is "twelve billion, seven hundred five million, five hundred seventy-four thousand, three hundred eighty-six".

Divisors: 1 2 3 6 1907 3814 5721 11442 1110433 2220866 3331299 6662598 2117595731 4235191462 6352787193 12705574386