1838220 has 24 divisors (see below), whose sum is σ = 5147184. Its totient is φ = 490176.

The previous prime is 1838209. The next prime is 1838233. The reversal of 1838220 is 228381.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15259 + ... + 15378.

It is an arithmetic number, because the mean of its divisors is an integer number (214466).

2^1838220 is an apocalyptic number.

1838220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838220 is an abundant number, since it is smaller than the sum of its proper divisors (3308964).

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

1838220 is a wasteful number, since it uses less digits than its factorization.

1838220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30649 (or 30647 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1838220 is about 1355.8097211630. The cubic root of 1838220 is about 122.4989865250.

The spelling of 1838220 in words is "one million, eight hundred thirty-eight thousand, two hundred twenty".