1622205 has 48 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 768384.

The previous prime is 1622189. The next prime is 1622207. The reversal of 1622205 is 5022261.

It is not a de Polignac number, because 1622205 - 2⁴ = 1622189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27466 + ... + 27524.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2^1622205 is an apocalyptic number.

1622205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1622205 is a deficient number, since it is larger than the sum of its proper divisors (1522755).

1622205 is a wasteful number, since it uses less digits than its factorization.

1622205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1622205 is about 1273.6581173926. The cubic root of 1622205 is about 117.4992907759.

Adding to 1622205 its reverse (5022261), we get a palindrome (6644466).

The spelling of 1622205 in words is "one million, six hundred twenty-two thousand, two hundred five".