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12925449808 = 241943988789
BaseRepresentation
bin11000000100110101…
…01011011001010000
31020100210111212211021
430002122223121100
5202432403343213
65534325125224
7635206340065
oct140232533120
936323455737
1012925449808
115533096827
122608859814
1312acacc06b
148a88c0c6c
15509b27d8d
hex3026ab650

12925449808 has 40 divisors (see below), whose sum is σ = 26974191200. Its totient is φ = 5980189824.

The previous prime is 12925449781. The next prime is 12925449841. The reversal of 12925449808 is 80894452921.

It is a happy number.

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, 481323 + ... + 507466.

It is an arithmetic number, because the mean of its divisors is an integer number (674354780).

Almost surely, 212925449808 is an apocalyptic number.

It is an amenable number.

12925449808 is an abundant number, since it is smaller than the sum of its proper divisors (14048741392).

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

12925449808 is a wasteful number, since it uses less digits than its factorization.

12925449808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988859 (or 988853 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 12925449808 in words is "twelve billion, nine hundred twenty-five million, four hundred forty-nine thousand, eight hundred eight".

Divisors: 1 2 4 8 16 19 38 43 76 86 152 172 304 344 688 817 1634 3268 6536 13072 988789 1977578 3955156 7910312 15820624 18786991 37573982 42517927 75147964 85035854 150295928 170071708 300591856 340143416 680286832 807840613 1615681226 3231362452 6462724904 12925449808