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52805380 = 22567157251
BaseRepresentation
bin1100100101101…
…1111100000100
310200100210100211
43021123330010
5102004233010
65123445204
71210560355
oct311337404
9120323324
1052805380
1127897511
1215826804
13ac2b2b4
147027d2c
15498108a
hex325bf04

52805380 has 48 divisors (see below), whose sum is σ = 113714496. Its totient is φ = 20592000.

The previous prime is 52805303. The next prime is 52805381. The reversal of 52805380 is 8350825.

52805380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (52805381) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 210255 + ... + 210505.

It is an arithmetic number, because the mean of its divisors is an integer number (2369052).

Almost surely, 252805380 is an apocalyptic number.

It is an amenable number.

52805380 is an abundant number, since it is smaller than the sum of its proper divisors (60909116).

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

52805380 is a wasteful number, since it uses less digits than its factorization.

52805380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 52805380 is about 7266.7310394702. The cubic root of 52805380 is about 375.1682326643.

The spelling of 52805380 in words is "fifty-two million, eight hundred five thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 67 134 157 251 268 314 335 502 628 670 785 1004 1255 1340 1570 2510 3140 5020 10519 16817 21038 33634 39407 42076 52595 67268 78814 84085 105190 157628 168170 197035 210380 336340 394070 788140 2640269 5280538 10561076 13201345 26402690 52805380