1622208 has 112 divisors (see below), whose sum is σ = 5266944. Its totient is φ = 430080.

The previous prime is 1622207. The next prime is 1622209. The reversal of 1622208 is 8022261.

It is an interprime number because it is at equal distance from previous prime (1622207) and next prime (1622209).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a zygodrome in base 2.

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 15 ways as a sum of consecutive naturals, for example, 22813 + ... + 22883.

2^1622208 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 1622208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2633472).

1622208 is an abundant number, since it is smaller than the sum of its proper divisors (3644736).

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

1622208 is a wasteful number, since it uses less digits than its factorization.

1622208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1622208 is about 1273.6592951021. The cubic root of 1622208 is about 117.4993632077.

Adding to 1622208 its reverse (8022261), we get a palindrome (9644469).

It can be divided in two parts, 1622 and 208, that added together give a triangular number (1830 = T₆₀).

The spelling of 1622208 in words is "one million, six hundred twenty-two thousand, two hundred eight".