128147456 has 28 divisors (see below), whose sum is σ = 256295652. Its totient is φ = 64069632.

The previous prime is 128147449. The next prime is 128147473. The reversal of 128147456 is 654741821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371 + ... + 16013.

Almost surely, 2^128147456 is an apocalyptic number.

128147456 is a gapful number since it is divisible by the number (16) 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 128147456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128147826).

128147456 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.

128147456 is an frugal number, since it uses more digits than its factorization.

128147456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15669 (or 15645 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 128147456 is about 11320.2233193520. The cubic root of 128147456 is about 504.1618695656.

The spelling of 128147456 in words is "one hundred twenty-eight million, one hundred forty-seven thousand, four hundred fifty-six".