1622228 has 24 divisors (see below), whose sum is σ = 2971752. Its totient is φ = 774144.

The previous prime is 1622209. The next prime is 1622233. The reversal of 1622228 is 8222261.

It can be written as a sum of positive squares in 4 ways, for example, as 114244 + 1507984 = 338^2 + 1228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14300 + ... + 14412.

It is an arithmetic number, because the mean of its divisors is an integer number (123823).

2^1622228 is an apocalyptic number.

It is an amenable number.

1622228 is a deficient number, since it is larger than the sum of its proper divisors (1349524).

1622228 is a wasteful number, since it uses less digits than its factorization.

1622228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 249 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 1622228 is about 1273.6671464712. The cubic root of 1622228 is about 117.4998460840.

Adding to 1622228 its reverse (8222261), we get a palindrome (9844489).

The spelling of 1622228 in words is "one million, six hundred twenty-two thousand, two hundred twenty-eight".