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1828031 = 2278053
BaseRepresentation
bin110111110010010111111
310102212120212
412332102333
5431444111
6103103035
721352352
oct6762277
93385525
101828031
111039477
12741a7b
134c009a
14358299
1526198b
hex1be4bf

1828031 has 4 divisors (see below), whose sum is σ = 1836312. Its totient is φ = 1819752.

The previous prime is 1828019. The next prime is 1828051. The reversal of 1828031 is 1308281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1828031 - 214 = 1811647 is a prime.

It is a super-2 number, since 2×18280312 = 6683394673922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1827988 and 1828006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1828051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800 + ... + 4253.

It is an arithmetic number, because the mean of its divisors is an integer number (459078).

21828031 is an apocalyptic number.

1828031 is a deficient number, since it is larger than the sum of its proper divisors (8281).

1828031 is an equidigital number, since it uses as much as digits as its factorization.

1828031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1828031 is about 1352.0469666398. The cubic root of 1828031 is about 122.2722353935.

The spelling of 1828031 in words is "one million, eight hundred twenty-eight thousand, thirty-one".

Divisors: 1 227 8053 1828031