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20268325 = 5271110529
BaseRepresentation
bin100110101010…
…0010100100101
31102010201220201
41031110110211
520142041300
62002230501
7334164220
oct115242445
942121821
1020268325
1110493990
126955431
1342785bc
1429985b7
151ba566a
hex1354525

20268325 has 24 divisors (see below), whose sum is σ = 31337280. Its totient is φ = 12633600.

The previous prime is 20268323. The next prime is 20268331. The reversal of 20268325 is 52386202.

It is not a de Polignac number, because 20268325 - 21 = 20268323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20268293 and 20268302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20268323) 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 23 ways as a sum of consecutive naturals, for example, 3340 + ... + 7189.

It is an arithmetic number, because the mean of its divisors is an integer number (1305720).

Almost surely, 220268325 is an apocalyptic number.

20268325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20268325 is a deficient number, since it is larger than the sum of its proper divisors (11068955).

20268325 is a wasteful number, since it uses less digits than its factorization.

20268325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10557 (or 10552 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20268325 is about 4502.0356506807. The cubic root of 20268325 is about 272.6502832346.

The spelling of 20268325 in words is "twenty million, two hundred sixty-eight thousand, three hundred twenty-five".

Divisors: 1 5 7 11 25 35 55 77 175 275 385 1925 10529 52645 73703 115819 263225 368515 579095 810733 1842575 2895475 4053665 20268325