1922228 has 36 divisors (see below), whose sum is σ = 4247712. Its totient is φ = 739440.

The previous prime is 1922213. The next prime is 1922233. The reversal of 1922228 is 8222291.

It is a junction number, because it is equal to n+sod(n) for n = 1922197 and 1922206.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 24293 + ... + 24371.

It is an arithmetic number, because the mean of its divisors is an integer number (117992).

2^1922228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1922228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2123856).

1922228 is an abundant number, since it is smaller than the sum of its proper divisors (2325484).

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

1922228 is a wasteful number, since it uses less digits than its factorization.

1922228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 99 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 1922228 is about 1386.4443732080. Note that the first 3 decimals coincide. The cubic root of 1922228 is about 124.3373574460.

It can be divided in two parts, 1 and 922228, that added together give a palindrome (922229).

The spelling of 1922228 in words is "one million, nine hundred twenty-two thousand, two hundred twenty-eight".