1232782320 has 320 divisors, whose sum is σ = 5016821760. Its totient is φ = 242611200.

The previous prime is 1232782303. The next prime is 1232782333. The reversal of 1232782320 is 232872321.

It is a Cunningham number, because it is equal to 35111²-1.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 349365 + ... + 352875.

It is an arithmetic number, because the mean of its divisors is an integer number (15677568).

Almost surely, 2^1232782320 is an apocalyptic number.

1232782320 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 1232782320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2508410880).

1232782320 is an abundant number, since it is smaller than the sum of its proper divisors (3784039440).

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

1232782320 is a wasteful number, since it uses less digits than its factorization.

1232782320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564 (or 3558 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 1232782320 is about 35110.9999857594. Note that the first 4 decimals coincide. The cubic root of 1232782320 is about 1072.2485454365.

Subtracting from 1232782320 its reverse (232872321), we obtain a palindrome (999909999).

The spelling of 1232782320 in words is "one billion, two hundred thirty-two million, seven hundred eighty-two thousand, three hundred twenty".