128454976 has 56 divisors (see below), whose sum is σ = 276350984. Its totient is φ = 58890240.

The previous prime is 128454973. The next prime is 128455001. The reversal of 128454976 is 679454821.

It can be written as a sum of positive squares in 4 ways, for example, as 20793600 + 107661376 = 4560^2 + 10376^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128454973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150166 + ... + 151018.

It is an arithmetic number, because the mean of its divisors is an integer number (4934839).

Almost surely, 2^128454976 is an apocalyptic number.

128454976 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 128454976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138175492).

128454976 is an abundant number, since it is smaller than the sum of its proper divisors (147896008).

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

128454976 is a wasteful number, since it uses less digits than its factorization.

128454976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059 (or 1049 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 128454976 is about 11333.7979512606. The cubic root of 128454976 is about 504.5648324486.

The spelling of 128454976 in words is "one hundred twenty-eight million, four hundred fifty-four thousand, nine hundred seventy-six".