1322281356 has 48 divisors (see below), whose sum is σ = 3380711040. Its totient is φ = 398917120.

The previous prime is 1322281327. The next prime is 1322281379. The reversal of 1322281356 is 6531822231.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 7900 + ... + 52028.

It is an arithmetic number, because the mean of its divisors is an integer number (70431480).

Almost surely, 2^1322281356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1322281356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1690355520).

1322281356 is an abundant number, since it is smaller than the sum of its proper divisors (2058429684).

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

1322281356 is a wasteful number, since it uses less digits than its factorization.

1322281356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44374 (or 44372 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 1322281356 is about 36363.1868240395. The cubic root of 1322281356 is about 1097.5929061748.

The spelling of 1322281356 in words is "one billion, three hundred twenty-two million, two hundred eighty-one thousand, three hundred fifty-six".