1322644356 has 48 divisors (see below), whose sum is σ = 3740815680. Its totient is φ = 400800960.

The previous prime is 1322644327. The next prime is 1322644361. The reversal of 1322644356 is 6534462231.

1322644356 is a `hidden beast` number, since 1 + 3 + 2 + 2 + 644 + 3 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1322644356.

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 15 ways as a sum of consecutive naturals, for example, 555481 + ... + 557856.

It is an arithmetic number, because the mean of its divisors is an integer number (77933660).

Almost surely, 2^1322644356 is an apocalyptic number.

It is an amenable number.

1322644356 is an abundant number, since it is smaller than the sum of its proper divisors (2418171324).

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

1322644356 is a wasteful number, since it uses less digits than its factorization.

1322644356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113361 (or 1113353 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 1322644356 is about 36368.1777932302. The cubic root of 1322644356 is about 1097.6933360794.

The spelling of 1322644356 in words is "one billion, three hundred twenty-two million, six hundred forty-four thousand, three hundred fifty-six".