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109680487 = 7431093343
BaseRepresentation
bin1101000100110…
…01011101100111
321122101100100021
412202121131213
5211034233422
614514500011
72501161120
oct642313547
9248340307
10109680487
1156a03634
1230894607
1319952ac7
14107d1047
159967dc7
hex6899767

109680487 has 16 divisors (see below), whose sum is σ = 129479680. Its totient is φ = 90955872.

The previous prime is 109680463. The next prime is 109680497. The reversal of 109680487 is 784086901.

It is not a de Polignac number, because 109680487 - 27 = 109680359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109680427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31138 + ... + 34480.

It is an arithmetic number, because the mean of its divisors is an integer number (8092480).

Almost surely, 2109680487 is an apocalyptic number.

109680487 is the 6047-th hex number.

109680487 is a deficient number, since it is larger than the sum of its proper divisors (19799193).

109680487 is a wasteful number, since it uses less digits than its factorization.

109680487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 109680487 is about 10472.8452199008. The cubic root of 109680487 is about 478.6776203731.

The spelling of 109680487 in words is "one hundred nine million, six hundred eighty thousand, four hundred eighty-seven".

Divisors: 1 7 43 109 301 763 3343 4687 23401 32809 143749 364387 1006243 2550709 15668641 109680487