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13244330880 = 2732511231613
BaseRepresentation
bin11000101010110110…
…00111001110000000
31021012000112201102100
430111123013032000
5204111022042010
610030115550400
7646130645364
oct142533071600
937160481370
1013244330880
115687096900
1226975bb400
131330baaba1
148d8dab2a4
15527b162c0
hex3156c7380

13244330880 has 576 divisors, whose sum is σ = 51976229760. Its totient is φ = 3102105600.

The previous prime is 13244330863. The next prime is 13244330887. The reversal of 13244330880 is 8803344231.

It is a happy number.

13244330880 is a `hidden beast` number, since 1 + 3 + 244 + 330 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13244330887) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21605454 + ... + 21606066.

It is an arithmetic number, because the mean of its divisors is an integer number (90236510).

Almost surely, 213244330880 is an apocalyptic number.

13244330880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13244330880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25988114880).

13244330880 is an abundant number, since it is smaller than the sum of its proper divisors (38731898880).

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

13244330880 is a wasteful number, since it uses less digits than its factorization.

13244330880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 13244330880 in words is "thirteen billion, two hundred forty-four million, three hundred thirty thousand, eight hundred eighty".