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13642862688 = 2532713895849
BaseRepresentation
bin11001011010010110…
…11001000001100000
31022012210110020021200
430231023121001200
5210420033101223
610133433521200
7662040263610
oct145513310140
938183406250
1013642862688
115871049734
122788b73200
131395627120
14935caca40
1554cad9a43
hex32d2d9060

13642862688 has 288 divisors, whose sum is σ = 48294792000. Its totient is φ = 3557081088.

The previous prime is 13642862683. The next prime is 13642862741. The reversal of 13642862688 is 88626824631.

13642862688 is a `hidden beast` number, since 1 + 3 + 6 + 4 + 2 + 8 + 626 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×136428626882 (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13642862683) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2329588 + ... + 2335436.

It is an arithmetic number, because the mean of its divisors is an integer number (167690250).

Almost surely, 213642862688 is an apocalyptic number.

13642862688 is a gapful number since it is divisible by the number (18) 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 13642862688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24147396000).

13642862688 is an abundant number, since it is smaller than the sum of its proper divisors (34651929312).

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

13642862688 is a wasteful number, since it uses less digits than its factorization.

13642862688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5974 (or 5963 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The spelling of 13642862688 in words is "thirteen billion, six hundred forty-two million, eight hundred sixty-two thousand, six hundred eighty-eight".