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12471018428 = 2211233897603
BaseRepresentation
bin10111001110101010…
…01010001110111100
31012012010102101011102
423213111022032330
5201020040042203
65421253112232
7621020623211
oct134725121674
935163371142
1012471018428
11531a623800
122500628678
13123991035b
148643cbb08
154cecb1888
hex2e754a3bc

12471018428 has 36 divisors (see below), whose sum is σ = 23998908360. Its totient is φ = 5666226720.

The previous prime is 12471018409. The next prime is 12471018473. The reversal of 12471018428 is 82481017421.

It is a junction number, because it is equal to n+sod(n) for n = 12471018391 and 12471018400.

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 11 ways as a sum of consecutive naturals, for example, 1636475 + ... + 1644077.

Almost surely, 212471018428 is an apocalyptic number.

It is an amenable number.

12471018428 is a deficient number, since it is larger than the sum of its proper divisors (11527889932).

12471018428 is a wasteful number, since it uses less digits than its factorization.

12471018428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11018 (or 11005 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The spelling of 12471018428 in words is "twelve billion, four hundred seventy-one million, eighteen thousand, four hundred twenty-eight".

Divisors: 1 2 4 11 22 44 121 242 484 3389 6778 7603 13556 15206 30412 37279 74558 83633 149116 167266 334532 410069 820138 919963 1640276 1839926 3679852 25766567 51533134 103066268 283432237 566864474 1133728948 3117754607 6235509214 12471018428