1836220 has 12 divisors (see below), whose sum is σ = 3856104. Its totient is φ = 734480.

The previous prime is 1836157. The next prime is 1836239. The reversal of 1836220 is 226381.

It is a junction number, because it is equal to n+sod(n) for n = 1836191 and 1836200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45886 + ... + 45925.

It is an arithmetic number, because the mean of its divisors is an integer number (321342).

2^1836220 is an apocalyptic number.

1836220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1836220 is an abundant number, since it is smaller than the sum of its proper divisors (2019884).

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

1836220 is a wasteful number, since it uses less digits than its factorization.

1836220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91820 (or 91818 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1836220 is about 1355.0719538091. The cubic root of 1836220 is about 122.4545437343.

The spelling of 1836220 in words is "one million, eight hundred thirty-six thousand, two hundred twenty".