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1829285 = 51721521
BaseRepresentation
bin110111110100110100101
310102221022022
412332212211
5432014120
6103112525
721356123
oct6764645
93387268
101829285
11103a407
12742745
134c0823
14358913
15262025
hex1be9a5

1829285 has 8 divisors (see below), whose sum is σ = 2324376. Its totient is φ = 1377280.

The previous prime is 1829281. The next prime is 1829293. The reversal of 1829285 is 5829281.

It can be written as a sum of positive squares in 4 ways, for example, as 386884 + 1442401 = 622^2 + 1201^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1829285 - 22 = 1829281 is a prime.

It is a super-2 number, since 2×18292852 = 6692567222450, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1829281) 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 7 ways as a sum of consecutive naturals, for example, 10676 + ... + 10845.

It is an arithmetic number, because the mean of its divisors is an integer number (290547).

21829285 is an apocalyptic number.

It is an amenable number.

1829285 is a deficient number, since it is larger than the sum of its proper divisors (495091).

1829285 is a wasteful number, since it uses less digits than its factorization.

1829285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21543.

The product of its digits is 11520, while the sum is 35.

The square root of 1829285 is about 1352.5106284240. The cubic root of 1829285 is about 122.3001879348.

The spelling of 1829285 in words is "one million, eight hundred twenty-nine thousand, two hundred eighty-five".

Divisors: 1 5 17 85 21521 107605 365857 1829285