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13724942868 = 223271329731979
BaseRepresentation
bin11001100100001001…
…00000001000010100
31022102111220100010100
430302010200020110
5211102041132433
610145525054100
7664055042460
oct146204401024
938374810110
1013724942868
11590341079a
1227b0557330
1313a9635290
14942b574a0
15554deeb13
hex332120214

13724942868 has 288 divisors, whose sum is σ = 44799955200. Its totient is φ = 3445327872.

The previous prime is 13724942857. The next prime is 13724942921. The reversal of 13724942868 is 86824942731.

13724942868 is a `hidden beast` number, since 1 + 3 + 72 + 494 + 2 + 86 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6934303 + ... + 6936281.

It is an arithmetic number, because the mean of its divisors is an integer number (155555400).

Almost surely, 213724942868 is an apocalyptic number.

13724942868 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 13724942868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22399977600).

13724942868 is an abundant number, since it is smaller than the sum of its proper divisors (31075012332).

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

13724942868 is a wasteful number, since it uses less digits than its factorization.

13724942868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111 (or 2106 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 13724942868 in words is "thirteen billion, seven hundred twenty-four million, nine hundred forty-two thousand, eight hundred sixty-eight".