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20326760 = 2351932633
BaseRepresentation
bin100110110001…
…0100101101000
31102020201001222
41031202211220
520200424020
62003401212
7334526456
oct115424550
942221058
1020326760
1110523883
126983208
13429908c
1429b19d6
151bb7b25
hex1362968

20326760 has 32 divisors (see below), whose sum is σ = 45989640. Its totient is φ = 8085504.

The previous prime is 20326759. The next prime is 20326769. The reversal of 20326760 is 6762302.

It can be written as a sum of positive squares in 4 ways, for example, as 10201636 + 10125124 = 3194^2 + 3182^2 .

It is not an unprimeable number, because it can be changed into a prime (20326769) 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, 6404 + ... + 9036.

Almost surely, 220326760 is an apocalyptic number.

20326760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20326760 is an abundant number, since it is smaller than the sum of its proper divisors (25662880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20326760 is a wasteful number, since it uses less digits than its factorization.

20326760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2833 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 20326760 is about 4508.5208217330. The cubic root of 20326760 is about 272.9120551118.

The spelling of 20326760 in words is "twenty million, three hundred twenty-six thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 193 386 772 965 1544 1930 2633 3860 5266 7720 10532 13165 21064 26330 52660 105320 508169 1016338 2032676 2540845 4065352 5081690 10163380 20326760