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17081980 = 225854099
BaseRepresentation
bin100000100101…
…0011001111100
31012010212001221
41001022121330
513333110410
61410043124
7265123456
oct101123174
935125057
1017081980
119707a43
1258794a4
1337011a6
1423a92d6
1517764da
hex104a67c

17081980 has 12 divisors (see below), whose sum is σ = 35872200. Its totient is φ = 6832784.

The previous prime is 17081959. The next prime is 17081993. The reversal of 17081980 is 8918071.

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 3 ways as a sum of consecutive naturals, for example, 427030 + ... + 427069.

It is an arithmetic number, because the mean of its divisors is an integer number (2989350).

Almost surely, 217081980 is an apocalyptic number.

17081980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17081980 is an abundant number, since it is smaller than the sum of its proper divisors (18790220).

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

17081980 is a wasteful number, since it uses less digits than its factorization.

17081980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854108 (or 854106 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 17081980 is about 4133.0352043020. The cubic root of 17081980 is about 257.5408173584.

The spelling of 17081980 in words is "seventeen million, eighty-one thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 854099 1708198 3416396 4270495 8540990 17081980