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12424724780 = 22513405711779
BaseRepresentation
bin10111001001001001…
…00100000100101100
31012001220022102012212
423210210210010230
5200421212143110
65412520545552
7616616263256
oct134444440454
935056272185
1012424724780
1152a6484696
1224a90222b8
131230151c70
1485c1bacd6
154cabb9e05
hex2e492412c

12424724780 has 48 divisors (see below), whose sum is σ = 28108305120. Its totient is φ = 4586070528.

The previous prime is 12424724779. The next prime is 12424724783. The reversal of 12424724780 is 8742742421.

It is not an unprimeable number, because it can be changed into a prime (12424724783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048931 + ... + 1060709.

It is an arithmetic number, because the mean of its divisors is an integer number (585589690).

Almost surely, 212424724780 is an apocalyptic number.

12424724780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12424724780 is an abundant number, since it is smaller than the sum of its proper divisors (15683580340).

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

12424724780 is a wasteful number, since it uses less digits than its factorization.

12424724780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15858 (or 15856 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 41.

The spelling of 12424724780 in words is "twelve billion, four hundred twenty-four million, seven hundred twenty-four thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 4057 8114 11779 16228 20285 23558 40570 47116 52741 58895 81140 105482 117790 153127 210964 235580 263705 306254 527410 612508 765635 1054820 1531270 3062540 47787403 95574806 191149612 238937015 477874030 621236239 955748060 1242472478 2484944956 3106181195 6212362390 12424724780