1322033640 has 64 divisors (see below), whose sum is σ = 3970460160. Its totient is φ = 352154880.

The previous prime is 1322033639. The next prime is 1322033653. The reversal of 1322033640 is 463302231.

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 1322033640.

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, 113362 + ... + 124478.

It is an arithmetic number, because the mean of its divisors is an integer number (62038440).

Almost surely, 2^1322033640 is an apocalyptic number.

1322033640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322033640 is an abundant number, since it is smaller than the sum of its proper divisors (2648426520).

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

1322033640 is a wasteful number, since it uses less digits than its factorization.

1322033640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12122 (or 12118 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 1322033640 is about 36359.7805273904. The cubic root of 1322033640 is about 1097.5243609283.

Adding to 1322033640 its reverse (463302231), we get a palindrome (1785335871).

The spelling of 1322033640 in words is "one billion, three hundred twenty-two million, thirty-three thousand, six hundred forty".