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12388497344 = 261910187909
BaseRepresentation
bin10111000100110100…
…10111011111000000
31011222101010212111222
423202122113133000
5200332423403334
65405144254212
7615666330026
oct134232273700
934871125458
1012388497344
115287a90463
122498a71368
1312257a9602
1485746a716
154c7910d2e
hex2e26977c0

12388497344 has 28 divisors (see below), whose sum is σ = 25877291400. Its totient is φ = 5868235008.

The previous prime is 12388497301. The next prime is 12388497371. The reversal of 12388497344 is 44379488321.

It is a happy number.

12388497344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5092739 + ... + 5095170.

Almost surely, 212388497344 is an apocalyptic number.

It is an amenable number.

12388497344 is an abundant number, since it is smaller than the sum of its proper divisors (13488794056).

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

12388497344 is a wasteful number, since it uses less digits than its factorization.

12388497344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10187940 (or 10187930 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 53.

The spelling of 12388497344 in words is "twelve billion, three hundred eighty-eight million, four hundred ninety-seven thousand, three hundred forty-four".

Divisors: 1 2 4 8 16 19 32 38 64 76 152 304 608 1216 10187909 20375818 40751636 81503272 163006544 193570271 326013088 387140542 652026176 774281084 1548562168 3097124336 6194248672 12388497344