1322352240 has 80 divisors (see below), whose sum is σ = 4471963776. Its totient is φ = 320569600.

The previous prime is 1322352233. The next prime is 1322352257. The reversal of 1322352240 is 422532231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1322352240.

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 15 ways as a sum of consecutive naturals, for example, 247806 + ... + 253085.

Almost surely, 2^1322352240 is an apocalyptic number.

1322352240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322352240 is an abundant number, since it is smaller than the sum of its proper divisors (3149611536).

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

1322352240 is a wasteful number, since it uses less digits than its factorization.

1322352240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500918 (or 500912 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1322352240 is about 36364.1614780267. The cubic root of 1322352240 is about 1097.6125188402.

Adding to 1322352240 its reverse (422532231), we get a palindrome (1744884471).

Subtracting from 1322352240 its reverse (422532231), we obtain a square (899820009 = 29997²).

The spelling of 1322352240 in words is "one billion, three hundred twenty-two million, three hundred fifty-two thousand, two hundred forty".