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12872946900 = 22352113900893
BaseRepresentation
bin10111111110100100…
…11001010011010100
31020020010201110101010
423333102121103110
5202330433300100
65525211532220
7634001146302
oct137722312324
936203643333
1012872946900
1155064965a0
1225b315a070
1312a1c78658
148a1935272
15505206750
hex2ff4994d4

12872946900 has 72 divisors (see below), whose sum is σ = 40631711904. Its totient is φ = 3120713600.

The previous prime is 12872946887. The next prime is 12872946973. The reversal of 12872946900 is 964927821.

It is a super-2 number, since 2×128729469002 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12872946900.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1947147 + ... + 1953746.

It is an arithmetic number, because the mean of its divisors is an integer number (564329332).

Almost surely, 212872946900 is an apocalyptic number.

12872946900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12872946900 is an abundant number, since it is smaller than the sum of its proper divisors (27758765004).

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

12872946900 is a wasteful number, since it uses less digits than its factorization.

12872946900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900921 (or 3900914 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 12872946900 in words is "twelve billion, eight hundred seventy-two million, nine hundred forty-six thousand, nine hundred".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 25 30 33 44 50 55 60 66 75 100 110 132 150 165 220 275 300 330 550 660 825 1100 1650 3300 3900893 7801786 11702679 15603572 19504465 23405358 39008930 42909823 46810716 58513395 78017860 85819646 97522325 117026790 128729469 171639292 195044650 214549115 234053580 257458938 292566975 390089300 429098230 514917876 585133950 643647345 858196460 1072745575 1170267900 1287294690 2145491150 2574589380 3218236725 4290982300 6436473450 12872946900