1320574632 has 128 divisors (see below), whose sum is σ = 3758899200. Its totient is φ = 383263488.

The previous prime is 1320574631. The next prime is 1320574649. The reversal of 1320574632 is 2364750231.

It is a junction number, because it is equal to n+sod(n) for n = 1320574593 and 1320574602.

It is not an unprimeable number, because it can be changed into a prime (1320574631) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2175273 + ... + 2175879.

It is an arithmetic number, because the mean of its divisors is an integer number (29366400).

Almost surely, 2^1320574632 is an apocalyptic number.

1320574632 is a gapful number since it is divisible by the number (12) 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 1320574632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1879449600).

1320574632 is an abundant number, since it is smaller than the sum of its proper divisors (2438324568).

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

1320574632 is a wasteful number, since it uses less digits than its factorization.

1320574632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 1320574632 is about 36339.7115013314. The cubic root of 1320574632 is about 1097.1204664523.

The spelling of 1320574632 in words is "one billion, three hundred twenty million, five hundred seventy-four thousand, six hundred thirty-two".