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12872372006 = 213495091231
BaseRepresentation
bin10111111110100000…
…01100111100100110
31020020002122020202202
423333100030330212
5202330311401011
65525151334502
7633663233234
oct137720147446
936202566682
1012872372006
11550613367a
1225b2b21432
1312a1b06a90
148a1825954
1550514123b
hex2ff40cf26

12872372006 has 8 divisors (see below), whose sum is σ = 20793831744. Its totient is φ = 5941094760.

The previous prime is 12872372003. The next prime is 12872372011. The reversal of 12872372006 is 60027327821.

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

It is a super-2 number, since 2×128723720062 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12872372003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247545590 + ... + 247545641.

It is an arithmetic number, because the mean of its divisors is an integer number (2599228968).

Almost surely, 212872372006 is an apocalyptic number.

12872372006 is a deficient number, since it is larger than the sum of its proper divisors (7921459738).

12872372006 is a wasteful number, since it uses less digits than its factorization.

12872372006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495091246.

The product of its (nonzero) digits is 56448, while the sum is 38.

Adding to 12872372006 its reverse (60027327821), we get a palindrome (72899699827).

The spelling of 12872372006 in words is "twelve billion, eight hundred seventy-two million, three hundred seventy-two thousand, six".

Divisors: 1 2 13 26 495091231 990182462 6436186003 12872372006