1816224 has 24 divisors (see below), whose sum is σ = 4767840. Its totient is φ = 605376.

The previous prime is 1816211. The next prime is 1816237. The reversal of 1816224 is 4226181.

It is an interprime number because it is at equal distance from previous prime (1816211) and next prime (1816237).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1816194 and 1816203.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9364 + ... + 9555.

It is an arithmetic number, because the mean of its divisors is an integer number (198660).

2^1816224 is an apocalyptic number.

It is an amenable number.

1816224 is an abundant number, since it is smaller than the sum of its proper divisors (2951616).

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

1816224 is a wasteful number, since it uses less digits than its factorization.

1816224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18932 (or 18924 counting only the distinct ones).

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

The square root of 1816224 is about 1347.6735509759. The cubic root of 1816224 is about 122.0084200943.

The spelling of 1816224 in words is "one million, eight hundred sixteen thousand, two hundred twenty-four".