1834220 has 12 divisors (see below), whose sum is σ = 3851904. Its totient is φ = 733680.

The previous prime is 1834207. The next prime is 1834229. The reversal of 1834220 is 224381.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 91711 = 1834220 / (1 + 8 + 3 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1834192 and 1834201.

It is not an unprimeable number, because it can be changed into a prime (1834229) 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, 45836 + ... + 45875.

It is an arithmetic number, because the mean of its divisors is an integer number (320992).

2^1834220 is an apocalyptic number.

1834220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1834220 is an abundant number, since it is smaller than the sum of its proper divisors (2017684).

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

1834220 is a wasteful number, since it uses less digits than its factorization.

1834220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91720 (or 91718 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1834220 is about 1354.3337845598. Note that the first 3 decimals coincide. The cubic root of 1834220 is about 122.4100686607.

The spelling of 1834220 in words is "one million, eight hundred thirty-four thousand, two hundred twenty".