128854720 has 56 divisors (see below), whose sum is σ = 315157104. Its totient is φ = 50144256.

The previous prime is 128854697. The next prime is 128854721. The reversal of 128854720 is 27458821.

It is a super-3 number, since 3×128854720³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 128854720.

It is not an unprimeable number, because it can be changed into a prime (128854721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6399 + ... + 17281.

Almost surely, 2^128854720 is an apocalyptic number.

128854720 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 128854720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157578552).

128854720 is an abundant number, since it is smaller than the sum of its proper divisors (186302384).

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

128854720 is a wasteful number, since it uses less digits than its factorization.

128854720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10937 (or 10927 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 128854720 is about 11351.4192945200. The cubic root of 128854720 is about 505.0876820597.

The spelling of 128854720 in words is "one hundred twenty-eight million, eight hundred fifty-four thousand, seven hundred twenty".