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16868982380 = 225843449119
BaseRepresentation
bin11111011010111100…
…00011111001101100
31121112121222002112012
433231132003321230
5234021424414010
611425520500352
71135012661435
oct175536037154
947477862465
1016868982380
117177112158
12332947a6b8
13178ab0c6a3
14b6053648c
1568ae47005
hex3ed783e6c

16868982380 has 12 divisors (see below), whose sum is σ = 35424863040. Its totient is φ = 6747592944.

The previous prime is 16868982379. The next prime is 16868982433. The reversal of 16868982380 is 8328986861.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421724540 + ... + 421724579.

It is an arithmetic number, because the mean of its divisors is an integer number (2952071920).

Almost surely, 216868982380 is an apocalyptic number.

16868982380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16868982380 is an abundant number, since it is smaller than the sum of its proper divisors (18555880660).

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

16868982380 is a wasteful number, since it uses less digits than its factorization.

16868982380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843449128 (or 843449126 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 16868982380 in words is "sixteen billion, eight hundred sixty-eight million, nine hundred eighty-two thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 843449119 1686898238 3373796476 4217245595 8434491190 16868982380