1184220 has 120 divisors (see below), whose sum is σ = 4024944. Its totient is φ = 290304.

The previous prime is 1184219. The next prime is 1184243. The reversal of 1184220 is 224811.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1184193 and 1184202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27519 + ... + 27561.

2^1184220 is an apocalyptic number.

1184220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1184220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2012472).

1184220 is an abundant number, since it is smaller than the sum of its proper divisors (2840724).

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

1184220 is a wasteful number, since it uses less digits than its factorization.

1184220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1184220 is about 1088.2187280138. The cubic root of 1184220 is about 105.7980014464.

The spelling of 1184220 in words is "one million, one hundred eighty-four thousand, two hundred twenty".