1322448720 has 160 divisors (see below), whose sum is σ = 4263477120. Its totient is φ = 338688000.

The previous prime is 1322448689. The next prime is 1322448763. The reversal of 1322448720 is 278442231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1746582 + ... + 1747338.

It is an arithmetic number, because the mean of its divisors is an integer number (26646732).

Almost surely, 2^1322448720 is an apocalyptic number.

1322448720 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 1322448720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2131738560).

1322448720 is an abundant number, since it is smaller than the sum of its proper divisors (2941028400).

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

1322448720 is a wasteful number, since it uses less digits than its factorization.

1322448720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1047 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 1322448720 is about 36365.4880346738. The cubic root of 1322448720 is about 1097.6392124541.

The spelling of 1322448720 in words is "one billion, three hundred twenty-two million, four hundred forty-eight thousand, seven hundred twenty".