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20080190 = 2513831861
BaseRepresentation
bin100110010011…
…0011000111110
31101210011211202
41030212120332
520120031230
61554215502
7332451554
oct114463076
941704752
1020080190
11103755a9
126884592
134210a90
142949bd4
151b69a45
hex132663e

20080190 has 32 divisors (see below), whose sum is σ = 39414816. Its totient is φ = 7320960.

The previous prime is 20080187. The next prime is 20080199. The reversal of 20080190 is 9108002.

It is a super-2 number, since 2×200801902 = 806428060872200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20080199) 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 15 ways as a sum of consecutive naturals, for example, 9860 + ... + 11720.

It is an arithmetic number, because the mean of its divisors is an integer number (1231713).

Almost surely, 220080190 is an apocalyptic number.

20080190 is a deficient number, since it is larger than the sum of its proper divisors (19334626).

20080190 is a wasteful number, since it uses less digits than its factorization.

20080190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 20080190 is about 4481.0925007190. The cubic root of 20080190 is about 271.8040597931.

Adding to 20080190 its reverse (9108002), we get a palindrome (29188192).

The spelling of 20080190 in words is "twenty million, eighty thousand, one hundred ninety".

Divisors: 1 2 5 10 13 26 65 83 130 166 415 830 1079 1861 2158 3722 5395 9305 10790 18610 24193 48386 120965 154463 241930 308926 772315 1544630 2008019 4016038 10040095 20080190