1920222 has 24 divisors (see below), whose sum is σ = 4203576. Its totient is φ = 633456.

The previous prime is 1920221. The next prime is 1920223. The reversal of 1920222 is 2220291.

It is an interprime number because it is at equal distance from previous prime (1920221) and next prime (1920223).

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 = 1920195 and 1920204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1428 + ... + 2424.

It is an arithmetic number, because the mean of its divisors is an integer number (175149).

2^1920222 is an apocalyptic number.

1920222 is an abundant number, since it is smaller than the sum of its proper divisors (2283354).

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

1920222 is a wasteful number, since it uses less digits than its factorization.

1920222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1920222 is about 1385.7207510895. The cubic root of 1920222 is about 124.2940903703.

The spelling of 1920222 in words is "one million, nine hundred twenty thousand, two hundred twenty-two".