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12180604080 = 243589570253
BaseRepresentation
bin10110101100000010…
…10100010010110000
31011102212221210120110
423112001110102300
5144421213312310
65332400341320
7610563266151
oct132601242260
934385853513
1012180604080
1151906a7147
12243b314840
1311c16ba648
148379d1928
154b4547d20
hex2d60544b0

12180604080 has 80 divisors (see below), whose sum is σ = 38184207840. Its totient is φ = 3211659264.

The previous prime is 12180604069. The next prime is 12180604081. The reversal of 12180604080 is 8040608121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12180604081) 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, 263767 + ... + 306486.

It is an arithmetic number, because the mean of its divisors is an integer number (477302598).

Almost surely, 212180604080 is an apocalyptic number.

12180604080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12180604080 is an abundant number, since it is smaller than the sum of its proper divisors (26003603760).

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

12180604080 is a wasteful number, since it uses less digits than its factorization.

12180604080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570358 (or 570352 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The spelling of 12180604080 in words is "twelve billion, one hundred eighty million, six hundred four thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 89 120 178 240 267 356 445 534 712 890 1068 1335 1424 1780 2136 2670 3560 4272 5340 7120 10680 21360 570253 1140506 1710759 2281012 2851265 3421518 4562024 5702530 6843036 8553795 9124048 11405060 13686072 17107590 22810120 27372144 34215180 45620240 50752517 68430360 101505034 136860720 152257551 203010068 253762585 304515102 406020136 507525170 609030204 761287755 812040272 1015050340 1218060408 1522575510 2030100680 2436120816 3045151020 4060201360 6090302040 12180604080