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16938857740 = 2257920313147
BaseRepresentation
bin11111100011010001…
…00111010100001100
31121201111110010111111
433301220213110030
5234142321421430
611440454301404
71136521625620
oct176150472414
947644403444
1016938857740
1172025a8592
123348957864
13179c43655c
14b69925180
1569214ac2a
hex3f1a2750c

16938857740 has 48 divisors (see below), whose sum is σ = 40660768512. Its totient is φ = 5806535616.

The previous prime is 16938857723. The next prime is 16938857753. The reversal of 16938857740 is 4775883961.

16938857740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1281847 + ... + 1294993.

It is an arithmetic number, because the mean of its divisors is an integer number (847099344).

Almost surely, 216938857740 is an apocalyptic number.

16938857740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16938857740 is an abundant number, since it is smaller than the sum of its proper divisors (23721910772).

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

16938857740 is a wasteful number, since it uses less digits than its factorization.

16938857740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22366 (or 22364 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 16938857740 in words is "sixteen billion, nine hundred thirty-eight million, eight hundred fifty-seven thousand, seven hundred forty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 9203 13147 18406 26294 36812 46015 52588 64421 65735 92029 92030 128842 131470 184058 184060 257684 262940 322105 368116 460145 644210 920290 1288420 1840580 120991841 241983682 483967364 604959205 846942887 1209918410 1693885774 2419836820 3387771548 4234714435 8469428870 16938857740