1223622 has 12 divisors (see below), whose sum is σ = 2651220. Its totient is φ = 407868.

The previous prime is 1223603. The next prime is 1223633. The reversal of 1223622 is 2263221.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 67979 = 1223622 / (1 + 2 + 2 + 3 + 6 + 2 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1223595 and 1223604.

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 5 ways as a sum of consecutive naturals, for example, 33972 + ... + 34007.

It is an arithmetic number, because the mean of its divisors is an integer number (220935).

2^1223622 is an apocalyptic number.

1223622 is an abundant number, since it is smaller than the sum of its proper divisors (1427598).

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

1223622 is a wasteful number, since it uses less digits than its factorization.

1223622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67987 (or 67984 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1223622 is about 1106.1744889483. The cubic root of 1223622 is about 106.9586121120.

Adding to 1223622 its reverse (2263221), we get a palindrome (3486843).

The spelling of 1223622 in words is "one million, two hundred twenty-three thousand, six hundred twenty-two".