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1830085 = 53111807
BaseRepresentation
bin110111110110011000101
310102222101221
412332303011
5432030320
6103120341
721361345
oct6766305
93388357
101830085
11103aa74
127430b1
134c0cba
14358d25
152623aa
hex1becc5

1830085 has 8 divisors (see below), whose sum is σ = 2267136. Its totient is φ = 1416720.

The previous prime is 1830083. The next prime is 1830089. The reversal of 1830085 is 5800381.

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

It is not a de Polignac number, because 1830085 - 21 = 1830083 is a prime.

It is a super-2 number, since 2×18300852 = 6698422214450, which contains 22 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 (1830083) 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, 5749 + ... + 6058.

It is an arithmetic number, because the mean of its divisors is an integer number (283392).

21830085 is an apocalyptic number.

It is an amenable number.

1830085 is a deficient number, since it is larger than the sum of its proper divisors (437051).

1830085 is a wasteful number, since it uses less digits than its factorization.

1830085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11843.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1830085 is about 1352.8063423861. The cubic root of 1830085 is about 122.3180138233.

It can be divided in two parts, 18 and 30085, that added together give a palindrome (30103).

The spelling of 1830085 in words is "one million, eight hundred thirty thousand, eighty-five".

Divisors: 1 5 31 155 11807 59035 366017 1830085