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20068629 = 37955649
BaseRepresentation
bin100110010001…
…1100100010101
31101202120222120
41030203210111
520114144004
61554050153
7332403060
oct114434425
941676876
1020068629
1110367949
126879959
134208739
1429458d7
151b663d9
hex1323915

20068629 has 8 divisors (see below), whose sum is σ = 30580800. Its totient is φ = 11467776.

The previous prime is 20068603. The next prime is 20068669. The reversal of 20068629 is 92686002.

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

It is not a de Polignac number, because 20068629 - 25 = 20068597 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20068629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20068669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 477804 + ... + 477845.

It is an arithmetic number, because the mean of its divisors is an integer number (3822600).

Almost surely, 220068629 is an apocalyptic number.

It is an amenable number.

20068629 is a deficient number, since it is larger than the sum of its proper divisors (10512171).

20068629 is an equidigital number, since it uses as much as digits as its factorization.

20068629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955659.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20068629 is about 4479.8023393895. The cubic root of 20068629 is about 271.7518868142.

The spelling of 20068629 in words is "twenty million, sixty-eight thousand, six hundred twenty-nine".

Divisors: 1 3 7 21 955649 2866947 6689543 20068629