128719044 has 72 divisors (see below), whose sum is σ = 340045888. Its totient is φ = 42573600.

The previous prime is 128719043. The next prime is 128719051. The reversal of 128719044 is 440917821.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (128719043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146334 + ... + 147210.

Almost surely, 2^128719044 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 128719044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170022944).

128719044 is an abundant number, since it is smaller than the sum of its proper divisors (211326844).

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

128719044 is a wasteful number, since it uses less digits than its factorization.

128719044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 128719044 is about 11345.4415515660. The cubic root of 128719044 is about 504.9103445061.

The spelling of 128719044 in words is "one hundred twenty-eight million, seven hundred nineteen thousand, forty-four".