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13244405244 = 2237157671491
BaseRepresentation
bin11000101010110110…
…11001010111111100
31021012000200111102120
430111123121113330
5204111031431434
610030121322540
7646131405240
oct142533312774
937160614376
1013244405244
115687137764
122697636450
131330c059a5
148d8dca420
15527b2d349
hex3156d95fc

13244405244 has 24 divisors (see below), whose sum is σ = 35318414208. Its totient is φ = 3784115760.

The previous prime is 13244405231. The next prime is 13244405269. The reversal of 13244405244 is 44250444231.

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, 78835662 + ... + 78835829.

It is an arithmetic number, because the mean of its divisors is an integer number (1471600592).

Almost surely, 213244405244 is an apocalyptic number.

13244405244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13244405244 is an abundant number, since it is smaller than the sum of its proper divisors (22074008964).

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

13244405244 is a wasteful number, since it uses less digits than its factorization.

13244405244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157671505 (or 157671503 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 13244405244 its reverse (44250444231), we get a palindrome (57494849475).

The spelling of 13244405244 in words is "thirteen billion, two hundred forty-four million, four hundred five thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 157671491 315342982 473014473 630685964 946028946 1103700437 1892057892 2207400874 3311101311 4414801748 6622202622 13244405244