1322240020 has 48 divisors (see below), whose sum is σ = 2928562560. Its totient is φ = 500079744.

The previous prime is 1322240009. The next prime is 1322240033. The reversal of 1322240020 is 200422231.

It is a junction number, because it is equal to n+sod(n) for n = 1322239976 and 1322240003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208537 + ... + 214783.

It is an arithmetic number, because the mean of its divisors is an integer number (61011720).

Almost surely, 2^1322240020 is an apocalyptic number.

1322240020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1322240020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464281280).

1322240020 is an abundant number, since it is smaller than the sum of its proper divisors (1606322540).

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

1322240020 is a wasteful number, since it uses less digits than its factorization.

1322240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6832 (or 6830 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1322240020 is about 36362.6184425709. The cubic root of 1322240020 is about 1097.5814687267.

Adding to 1322240020 its reverse (200422231), we get a palindrome (1522662251).

The spelling of 1322240020 in words is "one billion, three hundred twenty-two million, two hundred forty thousand, twenty".