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20012882 = 247212903
BaseRepresentation
bin100110001010…
…1111101010010
31101122202111212
41030111331102
520110403012
61552540122
7332051411
oct114257522
941582455
1020012882
1110329a7a
126851642
1341b9256
14292d478
151b54b22
hex1315f52

20012882 has 8 divisors (see below), whose sum is σ = 30658176. Its totient is φ = 9793492.

The previous prime is 20012873. The next prime is 20012903. The reversal of 20012882 is 28821002.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 106358 + ... + 106545.

It is an arithmetic number, because the mean of its divisors is an integer number (3832272).

Almost surely, 220012882 is an apocalyptic number.

20012882 is a deficient number, since it is larger than the sum of its proper divisors (10645294).

20012882 is a wasteful number, since it uses less digits than its factorization.

20012882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212952.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 20012882 is about 4473.5759745421. The cubic root of 20012882 is about 271.5000276978.

Adding to 20012882 its reverse (28821002), we get a palindrome (48833884).

The spelling of 20012882 in words is "twenty million, twelve thousand, eight hundred eighty-two".

Divisors: 1 2 47 94 212903 425806 10006441 20012882