1280822382 has 56 divisors (see below), whose sum is σ = 3292063536. Its totient is φ = 365946336.

The previous prime is 1280822371. The next prime is 1280822383. The reversal of 1280822382 is 2832280821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280822383) 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 27 ways as a sum of consecutive naturals, for example, 52543 + ... + 72954.

Almost surely, 2^1280822382 is an apocalyptic number.

1280822382 is an abundant number, since it is smaller than the sum of its proper divisors (2011241154).

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

1280822382 is an equidigital number, since it uses as much as digits as its factorization.

1280822382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125524 (or 125509 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 1280822382 is about 35788.5789323913. The cubic root of 1280822382 is about 1085.9995268763. Note that the first 3 decimals are identical.

The spelling of 1280822382 in words is "one billion, two hundred eighty million, eight hundred twenty-two thousand, three hundred eighty-two".