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52130208 = 2531341771
BaseRepresentation
bin1100011011011…
…1000110100000
310122002111012110
43012313012200
5101321131313
65101155320
71202046054
oct306670640
9118074173
1052130208
1127476219
121555bb40
13aa52ba0
146ccdc64
15489aec3
hex31b71a0

52130208 has 48 divisors (see below), whose sum is σ = 147371616. Its totient is φ = 16039680.

The previous prime is 52130207. The next prime is 52130261. The reversal of 52130208 is 80203125.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×521302082 = 5435117172246528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52130201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19638 + ... + 22133.

It is an arithmetic number, because the mean of its divisors is an integer number (3070242).

Almost surely, 252130208 is an apocalyptic number.

It is an amenable number.

52130208 is an abundant number, since it is smaller than the sum of its proper divisors (95241408).

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

52130208 is a wasteful number, since it uses less digits than its factorization.

52130208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41797 (or 41789 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 52130208 is about 7220.1252066706. The cubic root of 52130208 is about 373.5623962751.

The spelling of 52130208 in words is "fifty-two million, one hundred thirty thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 208 312 416 624 1248 41771 83542 125313 167084 250626 334168 501252 543023 668336 1002504 1086046 1336672 1629069 2005008 2172092 3258138 4010016 4344184 6516276 8688368 13032552 17376736 26065104 52130208