128047104 has 72 divisors (see below), whose sum is σ = 369876780. Its totient is φ = 42676224.

The previous prime is 128047091. The next prime is 128047109. The reversal of 128047104 is 401740821.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128047109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14959 + ... + 21905.

Almost surely, 2^128047104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128047104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184938390).

128047104 is an abundant number, since it is smaller than the sum of its proper divisors (241829676).

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

128047104 is an equidigital number, since it uses as much as digits as its factorization.

128047104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6975 (or 6952 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 128047104 is about 11315.7900298653. The cubic root of 128047104 is about 504.0302325024.

Adding to 128047104 its reverse (401740821), we get a palindrome (529787925).

It can be divided in two parts, 1280 and 47104, that added together give a palindrome (48384).

The spelling of 128047104 in words is "one hundred twenty-eight million, forty-seven thousand, one hundred four".