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52120712 = 2372132961
BaseRepresentation
bin1100011011010…
…0110010001000
310122002000011202
43012310302020
5101320330322
65101043332
71202006300
oct306646210
9118060152
1052120712
112746a076
1215556548
13aa4b777
146cca600
154898292
hex31b4c88

52120712 has 24 divisors (see below), whose sum is σ = 113682510. Its totient is φ = 22337280.

The previous prime is 52120711. The next prime is 52120729. The reversal of 52120712 is 21702125.

It can be written as a sum of positive squares in only one way, i.e., 44970436 + 7150276 = 6706^2 + 2674^2 .

It is not an unprimeable number, because it can be changed into a prime (52120711) 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 5 ways as a sum of consecutive naturals, for example, 66089 + ... + 66872.

Almost surely, 252120712 is an apocalyptic number.

It is an amenable number.

52120712 is an abundant number, since it is smaller than the sum of its proper divisors (61561798).

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

52120712 is a wasteful number, since it uses less digits than its factorization.

52120712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132981 (or 132970 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 52120712 is about 7219.4675703960. The cubic root of 52120712 is about 373.5397122814.

Adding to 52120712 its reverse (21702125), we get a palindrome (73822837).

The spelling of 52120712 in words is "fifty-two million, one hundred twenty thousand, seven hundred twelve".

Divisors: 1 2 4 7 8 14 28 49 56 98 196 392 132961 265922 531844 930727 1063688 1861454 3722908 6515089 7445816 13030178 26060356 52120712