1820298 has 16 divisors (see below), whose sum is σ = 3692736. Its totient is φ = 598080.

The previous prime is 1820293. The next prime is 1820303. The reversal of 1820298 is 8920281.

It is an interprime number because it is at equal distance from previous prime (1820293) and next prime (1820303).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1820293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1711 + ... + 2562.

It is an arithmetic number, because the mean of its divisors is an integer number (230796).

2^1820298 is an apocalyptic number.

1820298 is an abundant number, since it is smaller than the sum of its proper divisors (1872438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1820298 is a wasteful number, since it uses less digits than its factorization.

1820298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1820298 is about 1349.1841979507. The cubic root of 1820298 is about 122.0995782903.

The spelling of 1820298 in words is "one million, eight hundred twenty thousand, two hundred ninety-eight".