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289660122 = 232101283563
BaseRepresentation
bin10001010000111…
…101110011011010
3202012001020222200
4101100331303122
51043123110442
644424231030
710115033103
oct2120756332
9665036880
10289660122
11139561a34
128100b476
134801a62b
142a6813aa
151a66a34c
hex1143dcda

289660122 has 48 divisors (see below), whose sum is σ = 637180128. Its totient is φ = 95090400.

The previous prime is 289660109. The next prime is 289660141. The reversal of 289660122 is 221066982.

It is a happy number.

289660122 is a `hidden beast` number, since 28 + 9 + 6 + 601 + 22 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 514213 + ... + 514775.

It is an arithmetic number, because the mean of its divisors is an integer number (13274586).

Almost surely, 2289660122 is an apocalyptic number.

289660122 is an abundant number, since it is smaller than the sum of its proper divisors (347520006).

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

289660122 is a wasteful number, since it uses less digits than its factorization.

289660122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 289660122 is about 17019.4042786462. The cubic root of 289660122 is about 661.6519088328.

The spelling of 289660122 in words is "two hundred eighty-nine million, six hundred sixty thousand, one hundred twenty-two".

Divisors: 1 2 3 6 9 18 101 202 283 303 563 566 606 849 909 1126 1689 1698 1818 2547 3378 5067 5094 10134 28583 56863 57166 85749 113726 159329 170589 171498 257247 318658 341178 477987 511767 514494 955974 1023534 1433961 2867922 16092229 32184458 48276687 96553374 144830061 289660122