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12405204052 = 2222743931121
BaseRepresentation
bin10111000110110100…
…00110010001010100
31012000112120122210221
423203122012101110
5200401213012202
65410542324124
7616261331443
oct134332062124
935015518727
1012405204052
11529646145a
1224a2589644
1312290a8a37
14859778d5a
154c9111037
hex2e3686454

12405204052 has 24 divisors (see below), whose sum is σ = 21855113280. Its totient is φ = 6161013120.

The previous prime is 12405204037. The next prime is 12405204089. The reversal of 12405204052 is 25040250421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383052 + ... + 414172.

It is an arithmetic number, because the mean of its divisors is an integer number (910629720).

Almost surely, 212405204052 is an apocalyptic number.

It is an amenable number.

12405204052 is a deficient number, since it is larger than the sum of its proper divisors (9449909228).

12405204052 is a wasteful number, since it uses less digits than its factorization.

12405204052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31791 (or 31789 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 12405204052 its reverse (25040250421), we get a palindrome (37445454473).

The spelling of 12405204052 in words is "twelve billion, four hundred five million, two hundred four thousand, fifty-two".

Divisors: 1 2 4 227 439 454 878 908 1756 31121 62242 99653 124484 199306 398612 7064467 13662119 14128934 27324238 28257868 54648476 3101301013 6202602026 12405204052