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19608693 = 313502787
BaseRepresentation
bin100101011001…
…1010001110101
31100220020001220
41022303101311
520004434233
61540140553
7325446126
oct112632165
940806056
1019608693
1110083335
126697759
1340a72a0
14286604d
151ac4eb3
hex12b3475

19608693 has 8 divisors (see below), whose sum is σ = 28156128. Its totient is φ = 12066864.

The previous prime is 19608683. The next prime is 19608707. The reversal of 19608693 is 39680691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19608693 - 25 = 19608661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19608643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251355 + ... + 251432.

It is an arithmetic number, because the mean of its divisors is an integer number (3519516).

Almost surely, 219608693 is an apocalyptic number.

19608693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19608693 is a deficient number, since it is larger than the sum of its proper divisors (8547435).

19608693 is a wasteful number, since it uses less digits than its factorization.

19608693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502803.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 19608693 is about 4428.1703896756. The cubic root of 19608693 is about 269.6598047361.

It can be divided in two parts, 19608 and 693, that added together give a triangular number (20301 = T201).

The spelling of 19608693 in words is "nineteen million, six hundred eight thousand, six hundred ninety-three".

Divisors: 1 3 13 39 502787 1508361 6536231 19608693