1322244240 has 160 divisors (see below), whose sum is σ = 4415717376. Its totient is φ = 326346240.

The previous prime is 1322244211. The next prime is 1322244293. The reversal of 1322244240 is 424422231.

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 1322244240.

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, 167257 + ... + 174983.

Almost surely, 2^1322244240 is an apocalyptic number.

1322244240 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 1322244240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2207858688).

1322244240 is an abundant number, since it is smaller than the sum of its proper divisors (3093473136).

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

1322244240 is a wasteful number, since it uses less digits than its factorization.

1322244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7797 (or 7791 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1322244240 is about 36362.6764691490. The cubic root of 1322244240 is about 1097.5826363889.

Adding to 1322244240 its reverse (424422231), we get a palindrome (1746666471).

The spelling of 1322244240 in words is "one billion, three hundred twenty-two million, two hundred forty-four thousand, two hundred forty".