128254560 has 384 divisors, whose sum is σ = 508032000. Its totient is φ = 27095040.

The previous prime is 128254531. The next prime is 128254561. The reversal of 128254560 is 65452821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128254561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3128140 + ... + 3128180.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^128254560 is an apocalyptic number.

128254560 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 128254560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254016000).

128254560 is an abundant number, since it is smaller than the sum of its proper divisors (379777440).

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

128254560 is a wasteful number, since it uses less digits than its factorization.

128254560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 128254560 is about 11324.9529800348. The cubic root of 128254560 is about 504.3022877942.

The spelling of 128254560 in words is "one hundred twenty-eight million, two hundred fifty-four thousand, five hundred sixty".