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12827987952 = 2431320557673
BaseRepresentation
bin10111111001001101…
…11000111111110000
31020010000010022021220
423330212320333300
5202232431103302
65520524145040
7632614045533
oct137446707760
936100108256
1012827987952
11549307923a
1225a0098180
131295866920
14899990a1a
155012c54bc
hex2fc9b8ff0

12827987952 has 40 divisors (see below), whose sum is σ = 35688122064. Its totient is φ = 3947073024.

The previous prime is 12827987951. The next prime is 12827987957. The reversal of 12827987952 is 25978972821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12827987951) 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, 10278213 + ... + 10279460.

Almost surely, 212827987952 is an apocalyptic number.

12827987952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12827987952 is an abundant number, since it is smaller than the sum of its proper divisors (22860134112).

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

12827987952 is a wasteful number, since it uses less digits than its factorization.

12827987952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20557697 (or 20557691 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 60.

The spelling of 12827987952 in words is "twelve billion, eight hundred twenty-seven million, nine hundred eighty-seven thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 39 48 52 78 104 156 208 312 624 20557673 41115346 61673019 82230692 123346038 164461384 246692076 267249749 328922768 493384152 534499498 801749247 986768304 1068998996 1603498494 2137997992 3206996988 4275995984 6413993976 12827987952