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52210312 = 23711131647
BaseRepresentation
bin1100011100101…
…0101010001000
310122020120002021
43013022222020
5101331212222
65103014224
71202531440
oct307125210
9118216067
1052210312
1127520420
121559a374
13aa8049b
146d11120
1548b4ac7
hex31caa88

52210312 has 64 divisors (see below), whose sum is σ = 123171840. Its totient is φ = 20155200.

The previous prime is 52210303. The next prime is 52210313. The reversal of 52210312 is 21301225.

It is not an unprimeable number, because it can be changed into a prime (52210313) 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 15 ways as a sum of consecutive naturals, for example, 80373 + ... + 81019.

It is an arithmetic number, because the mean of its divisors is an integer number (1924560).

Almost surely, 252210312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52210312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61585920).

52210312 is an abundant number, since it is smaller than the sum of its proper divisors (70961528).

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

52210312 is a wasteful number, since it uses less digits than its factorization.

52210312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 52210312 is about 7225.6703495247. The cubic root of 52210312 is about 373.7536387382.

Adding to 52210312 its reverse (21301225), we get a palindrome (73511537).

The spelling of 52210312 in words is "fifty-two million, two hundred ten thousand, three hundred twelve".

Divisors: 1 2 4 7 8 11 14 22 28 44 56 77 88 131 154 262 308 524 616 647 917 1048 1294 1441 1834 2588 2882 3668 4529 5176 5764 7117 7336 9058 10087 11528 14234 18116 20174 28468 36232 40348 49819 56936 80696 84757 99638 169514 199276 339028 398552 593299 678056 932327 1186598 1864654 2373196 3729308 4746392 6526289 7458616 13052578 26105156 52210312