1427881328 has 20 divisors (see below), whose sum is σ = 2855763648. Its totient is φ = 690910080.

The previous prime is 1427881327. The next prime is 1427881373. The reversal of 1427881328 is 8231887241.

1427881328 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427881327) 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 3 ways as a sum of consecutive naturals, for example, 1438901 + ... + 1439892.

Almost surely, 2^1427881328 is an apocalyptic number.

It is an amenable number.

1427881328 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1427881328 is a wasteful number, since it uses less digits than its factorization.

1427881328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878832 (or 2878826 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 1427881328 is about 37787.3170256900. The cubic root of 1427881328 is about 1126.0664988957.

The spelling of 1427881328 in words is "one billion, four hundred twenty-seven million, eight hundred eighty-one thousand, three hundred twenty-eight".