1881224 has 16 divisors (see below), whose sum is σ = 3560220. Its totient is φ = 931840.

The previous prime is 1881223. The next prime is 1881241. The reversal of 1881224 is 4221881.

It can be written as a sum of positive squares in 2 ways, for example, as 1612900 + 268324 = 1270^2 + 518^2 .

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 = 1881193 and 1881202.

It is not an unprimeable number, because it can be changed into a prime (1881221) 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, 137 + ... + 1944.

2^1881224 is an apocalyptic number.

It is an amenable number.

1881224 is a deficient number, since it is larger than the sum of its proper divisors (1678996).

1881224 is a wasteful number, since it uses less digits than its factorization.

1881224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200 (or 2196 counting only the distinct ones).

The product of its digits is 1024, while the sum is 26.

The square root of 1881224 is about 1371.5771943278. The cubic root of 1881224 is about 123.4468948359.

The spelling of 1881224 in words is "one million, eight hundred eighty-one thousand, two hundred twenty-four".