1830247 has 4 divisors (see below), whose sum is σ = 1836016. Its totient is φ = 1824480.

The previous prime is 1830223. The next prime is 1830253. The reversal of 1830247 is 7420381.

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 1830247 - 2⁷ = 1830119 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1830287) 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, 2379 + ... + 3052.

It is an arithmetic number, because the mean of its divisors is an integer number (459004).

2^1830247 is an apocalyptic number.

1830247 is a deficient number, since it is larger than the sum of its proper divisors (5769).

1830247 is an equidigital number, since it uses as much as digits as its factorization.

1830247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5768.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1830247 is about 1352.8662165935. The cubic root of 1830247 is about 122.3216229332.

It can be divided in two parts, 18 and 30247, that multiplied together give a triangular number (544446 = T₁₀₄₃).

The spelling of 1830247 in words is "one million, eight hundred thirty thousand, two hundred forty-seven".