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17944280029 = 131972648907
BaseRepresentation
bin10000101101100011…
…111111101111011101
31201022120022212121001
4100231203333233131
5243222213430104
612124332110301
71203450602134
oct205543775735
951276285531
1017944280029
1176790951a5
123589605391
1318cc8217a0
14c2328491b
1570054daa4
hex42d8ffbdd

17944280029 has 8 divisors (see below), whose sum is σ = 20341694240. Its totient is φ = 15692163696.

The previous prime is 17944280027. The next prime is 17944280041. The reversal of 17944280029 is 92008244971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17944280029 - 21 = 17944280027 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17944280023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36324207 + ... + 36324700.

It is an arithmetic number, because the mean of its divisors is an integer number (2542711780).

Almost surely, 217944280029 is an apocalyptic number.

17944280029 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

17944280029 is a deficient number, since it is larger than the sum of its proper divisors (2397414211).

17944280029 is a wasteful number, since it uses less digits than its factorization.

17944280029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72648939.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 17944280029 in words is "seventeen billion, nine hundred forty-four million, two hundred eighty thousand, twenty-nine".

Divisors: 1 13 19 247 72648907 944435791 1380329233 17944280029