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12072001270 = 2571391240699
BaseRepresentation
bin10110011111000110…
…00001111011110110
31011011022121012112011
423033203001323312
5144210413020040
65313520514434
7605104213660
oct131743017366
934138535464
1012072001270
11513536a25a
12240aa7ba1a
1311a5054224
14827401530
154a9c443ea
hex2cf8c1ef6

12072001270 has 32 divisors (see below), whose sum is σ = 25012512000. Its totient is φ = 4109191776.

The previous prime is 12072001267. The next prime is 12072001289. The reversal of 12072001270 is 7210027021.

It is a super-2 number, since 2×120720012702 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610620 + ... + 630079.

It is an arithmetic number, because the mean of its divisors is an integer number (781641000).

Almost surely, 212072001270 is an apocalyptic number.

12072001270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12072001270 is an abundant number, since it is smaller than the sum of its proper divisors (12940510730).

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

12072001270 is a wasteful number, since it uses less digits than its factorization.

12072001270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240852.

The product of its (nonzero) digits is 392, while the sum is 22.

Adding to 12072001270 its reverse (7210027021), we get a palindrome (19282028291).

The spelling of 12072001270 in words is "twelve billion, seventy-two million, one thousand, two hundred seventy".

Divisors: 1 2 5 7 10 14 35 70 139 278 695 973 1390 1946 4865 9730 1240699 2481398 6203495 8684893 12406990 17369786 43424465 86848930 172457161 344914322 862285805 1207200127 1724571610 2414400254 6036000635 12072001270