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17288138840 = 235728820479
BaseRepresentation
bin10000000110011101…
…000001000001011000
31122121211200110002112
4100012131001001120
5240401230420330
611535252451452
71151262520100
oct200635010130
948554613075
1017288138840
117371781655
123425919b88
1318268ca46b
14ba0086200
156b2b41795
hex406741058

17288138840 has 48 divisors (see below), whose sum is σ = 45249062400. Its totient is φ = 5927361216.

The previous prime is 17288138801. The next prime is 17288138897. The reversal of 17288138840 is 4883188271.

It is a super-2 number, since 2×172881388402 (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 4408280 + ... + 4412199.

It is an arithmetic number, because the mean of its divisors is an integer number (942688800).

Almost surely, 217288138840 is an apocalyptic number.

17288138840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17288138840 is an abundant number, since it is smaller than the sum of its proper divisors (27960923560).

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

17288138840 is a wasteful number, since it uses less digits than its factorization.

17288138840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8820504 (or 8820493 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 50.

The spelling of 17288138840 in words is "seventeen billion, two hundred eighty-eight million, one hundred thirty-eight thousand, eight hundred forty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 49 56 70 98 140 196 245 280 392 490 980 1960 8820479 17640958 35281916 44102395 61743353 70563832 88204790 123486706 176409580 246973412 308716765 352819160 432203471 493946824 617433530 864406942 1234867060 1728813884 2161017355 2469734120 3457627768 4322034710 8644069420 17288138840