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20482933 = 28172893
BaseRepresentation
bin100111000100…
…0101101110101
31102112122022011
41032020231311
520220423213
62011004221
7336050002
oct116105565
942478264
1020482933
1110620149
126a39671
1343221a3
142a128a9
151be903d
hex1388b75

20482933 has 4 divisors (see below), whose sum is σ = 20556108. Its totient is φ = 20409760.

The previous prime is 20482927. The next prime is 20482937. The reversal of 20482933 is 33928402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5560164 + 14922769 = 2358^2 + 3863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20482933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20482895 and 20482904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20482937) 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 3 ways as a sum of consecutive naturals, for example, 36166 + ... + 36727.

It is an arithmetic number, because the mean of its divisors is an integer number (5139027).

Almost surely, 220482933 is an apocalyptic number.

It is an amenable number.

20482933 is a deficient number, since it is larger than the sum of its proper divisors (73175).

20482933 is an equidigital number, since it uses as much as digits as its factorization.

20482933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73174.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20482933 is about 4525.8074417721. The cubic root of 20482933 is about 273.6092116767.

The spelling of 20482933 in words is "twenty million, four hundred eighty-two thousand, nine hundred thirty-three".

Divisors: 1 281 72893 20482933