1880221 has 16 divisors (see below), whose sum is σ = 2306560. Its totient is φ = 1496880.

The previous prime is 1880209. The next prime is 1880233. The reversal of 1880221 is 1220881.

It is an interprime number because it is at equal distance from previous prime (1880209) and next prime (1880233).

It is not a de Polignac number, because 1880221 - 2⁵ = 1880189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1880192 and 1880201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1880201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8806 + ... + 9016.

It is an arithmetic number, because the mean of its divisors is an integer number (144160).

2^1880221 is an apocalyptic number.

It is an amenable number.

1880221 is a deficient number, since it is larger than the sum of its proper divisors (426339).

1880221 is a wasteful number, since it uses less digits than its factorization.

1880221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1880221 is about 1371.2115081197. The cubic root of 1880221 is about 123.4249518089.

The spelling of 1880221 in words is "one million, eight hundred eighty thousand, two hundred twenty-one".