1322144340 has 96 divisors (see below), whose sum is σ = 4053490560. Its totient is φ = 319334400.

The previous prime is 1322144333. The next prime is 1322144353. The reversal of 1322144340 is 434412231.

It is a self number, because there is not a number n which added to its sum of digits gives 1322144340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181896 + ... + 189024.

It is an arithmetic number, because the mean of its divisors is an integer number (42223860).

Almost surely, 2^1322144340 is an apocalyptic number.

1322144340 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 1322144340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026745280).

1322144340 is an abundant number, since it is smaller than the sum of its proper divisors (2731346220).

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

1322144340 is a wasteful number, since it uses less digits than its factorization.

1322144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433 (or 7431 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1322144340 is about 36361.3027819411. The cubic root of 1322144340 is about 1097.5549936727.

Adding to 1322144340 its reverse (434412231), we get a palindrome (1756556571).

The spelling of 1322144340 in words is "one billion, three hundred twenty-two million, one hundred forty-four thousand, three hundred forty".