1322620 has 24 divisors (see below), whose sum is σ = 2991744. Its totient is φ = 488256.

The previous prime is 1322611. The next prime is 1322621. The reversal of 1322620 is 262231.

It is a d-powerful number, because it can be written as 1 + 3³ + 2¹² + 2¹⁸ + 6⁵ + 2²⁰ + 0 .

It is a junction number, because it is equal to n+sod(n) for n = 1322594 and 1322603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2284 + ... + 2803.

It is an arithmetic number, because the mean of its divisors is an integer number (124656).

2^1322620 is an apocalyptic number.

1322620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322620 is an abundant number, since it is smaller than the sum of its proper divisors (1669124).

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

1322620 is a wasteful number, since it uses less digits than its factorization.

1322620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109 (or 5107 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1322620 is about 1150.0521727296. The cubic root of 1322620 is about 109.7686598168.

Adding to 1322620 its reverse (262231), we get a palindrome (1584851).

The spelling of 1322620 in words is "one million, three hundred twenty-two thousand, six hundred twenty".