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16808860 = 2252336541
BaseRepresentation
bin100000000011…
…1101110011100
31011121222102101
41000013232130
513300340420
61400134444
7262605265
oct100075634
934558371
1016808860
119540822
125767424
133636a93
14233796c
15172060a
hex1007b9c

16808860 has 24 divisors (see below), whose sum is σ = 36834336. Its totient is φ = 6431040.

The previous prime is 16808833. The next prime is 16808881. The reversal of 16808860 is 6880861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17811 + ... + 18730.

It is an arithmetic number, because the mean of its divisors is an integer number (1534764).

Almost surely, 216808860 is an apocalyptic number.

16808860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16808860 is an abundant number, since it is smaller than the sum of its proper divisors (20025476).

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

16808860 is a wasteful number, since it uses less digits than its factorization.

16808860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36573 (or 36571 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 16808860 is about 4099.8609732526. The cubic root of 16808860 is about 256.1608486223.

The spelling of 16808860 in words is "sixteen million, eight hundred eight thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 36541 73082 146164 182705 365410 730820 840443 1680886 3361772 4202215 8404430 16808860