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13389188640 = 2535294322369
BaseRepresentation
bin11000111100000111…
…01100111000100000
31021120010010020220120
430132003230320200
5204410113014030
610052332440240
7652540140252
oct143603547040
937503106816
1013389188640
115750936663
122718019080
131354bc9339
14910317cd2
155356cc010
hex31e0ece20

13389188640 has 192 divisors, whose sum is σ = 44646940800. Its totient is φ = 3367010304.

The previous prime is 13389188629. The next prime is 13389188647. The reversal of 13389188640 is 4688198331.

It is not an unprimeable number, because it can be changed into a prime (13389188647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 587376 + ... + 609744.

It is an arithmetic number, because the mean of its divisors is an integer number (232536150).

Almost surely, 213389188640 is an apocalyptic number.

13389188640 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 13389188640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22323470400).

13389188640 is an abundant number, since it is smaller than the sum of its proper divisors (31257752160).

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

13389188640 is a wasteful number, since it uses less digits than its factorization.

13389188640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22459 (or 22451 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 13389188640 in words is "thirteen billion, three hundred eighty-nine million, one hundred eighty-eight thousand, six hundred forty".