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2789125 = 5353421
BaseRepresentation
bin1010101000111100000101
312020200221221
422220330011
51203223000
6135440341
732464363
oct12507405
95220857
102789125
111635569
12b260b1
13768691
14528633
153a161a
hex2a8f05

2789125 has 16 divisors (see below), whose sum is σ = 3554928. Its totient is φ = 2184000.

The previous prime is 2789123. The next prime is 2789161. The reversal of 2789125 is 5219872.

It can be written as a sum of positive squares in 8 ways, for example, as 1572516 + 1216609 = 1254^2 + 1103^2 .

It is not a de Polignac number, because 2789125 - 21 = 2789123 is a prime.

It is a super-3 number, since 3×27891253 = 65091636435333984375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6415 + ... + 6835.

It is an arithmetic number, because the mean of its divisors is an integer number (222183).

22789125 is an apocalyptic number.

2789125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2789125 is a deficient number, since it is larger than the sum of its proper divisors (765803).

2789125 is an equidigital number, since it uses as much as digits as its factorization.

2789125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 479 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 2789125 is about 1670.0673639108. The cubic root of 2789125 is about 140.7632631914.

The spelling of 2789125 in words is "two million, seven hundred eighty-nine thousand, one hundred twenty-five".

Divisors: 1 5 25 53 125 265 421 1325 2105 6625 10525 22313 52625 111565 557825 2789125