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20122012 = 2273137503
BaseRepresentation
bin100110011000…
…0100110011100
31101212022012201
41030300212130
520122401022
61555141244
7333014521
oct114604634
941768181
1020122012
11103a3a69
1268a4824
134226b21
14295b148
151b77127
hex133099c

20122012 has 24 divisors (see below), whose sum is σ = 36027936. Its totient is φ = 9831168.

The previous prime is 20121989. The next prime is 20122031. The reversal of 20122012 is 21022102.

It is a self number, because there is not a number n which added to its sum of digits gives 20122012.

It is a congruent number.

It is an unprimeable number.

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, 39753 + ... + 40255.

It is an arithmetic number, because the mean of its divisors is an integer number (1501164).

Almost surely, 220122012 is an apocalyptic number.

It is an amenable number.

20122012 is a deficient number, since it is larger than the sum of its proper divisors (15905924).

20122012 is a wasteful number, since it uses less digits than its factorization.

20122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20122012 is about 4485.7565694094. The cubic root of 20122012 is about 271.9926288372.

Adding to 20122012 its reverse (21022102), we get a palindrome (41144114).

The spelling of 20122012 in words is "twenty million, one hundred twenty-two thousand, twelve".

Divisors: 1 2 4 73 137 146 274 292 503 548 1006 2012 10001 20002 36719 40004 68911 73438 137822 146876 275644 5030503 10061006 20122012