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20310850 = 252758031
BaseRepresentation
bin100110101111…
…0101101000010
31102012220020201
41031132231002
520144421400
62003155414
7334432210
oct115365502
942186221
1020310850
111051292a
126975b6a
134291a71
1429a9cb0
151bb306a
hex135eb42

20310850 has 24 divisors (see below), whose sum is σ = 43175808. Its totient is φ = 6963600.

The previous prime is 20310841. The next prime is 20310877. The reversal of 20310850 is 5801302.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 28666 + ... + 29365.

It is an arithmetic number, because the mean of its divisors is an integer number (1798992).

Almost surely, 220310850 is an apocalyptic number.

20310850 is an abundant number, since it is smaller than the sum of its proper divisors (22864958).

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

20310850 is a wasteful number, since it uses less digits than its factorization.

20310850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58050 (or 58045 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 20310850 is about 4506.7560395477. The cubic root of 20310850 is about 272.8408326749.

The spelling of 20310850 in words is "twenty million, three hundred ten thousand, eight hundred fifty".

Divisors: 1 2 5 7 10 14 25 35 50 70 175 350 58031 116062 290155 406217 580310 812434 1450775 2031085 2901550 4062170 10155425 20310850