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20469107 = 151283479
BaseRepresentation
bin100111000010…
…1010101110011
31102111221100002
41032011111303
520220002412
62010420215
7335661461
oct116052563
942457302
1020469107
111061081a
126a3166b
134318ac9
142a0b831
151be4dc2
hex1385573

20469107 has 8 divisors (see below), whose sum is σ = 20720640. Its totient is φ = 20219400.

The previous prime is 20469101. The next prime is 20469131. The reversal of 20469107 is 70196402.

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

It is a cyclic number.

It is not a de Polignac number, because 20469107 - 24 = 20469091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20469107.

It is not an unprimeable number, because it can be changed into a prime (20469101) 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, 42494 + ... + 42972.

It is an arithmetic number, because the mean of its divisors is an integer number (2590080).

Almost surely, 220469107 is an apocalyptic number.

20469107 is a deficient number, since it is larger than the sum of its proper divisors (251533).

20469107 is a wasteful number, since it uses less digits than its factorization.

20469107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20469107 is about 4524.2797216795. The cubic root of 20469107 is about 273.5476356573.

The spelling of 20469107 in words is "twenty million, four hundred sixty-nine thousand, one hundred seven".

Divisors: 1 151 283 479 42733 72329 135557 20469107