128578350 has 48 divisors (see below), whose sum is σ = 322198128. Its totient is φ = 33930240.

The previous prime is 128578343. The next prime is 128578357. The reversal of 128578350 is 53875821.

It is an interprime number because it is at equal distance from previous prime (128578343) and next prime (128578357).

It is a junction number, because it is equal to n+sod(n) for n = 128578299 and 128578308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128578357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10132 + ... + 18968.

It is an arithmetic number, because the mean of its divisors is an integer number (6712461).

Almost surely, 2^128578350 is an apocalyptic number.

128578350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128578350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161099064).

128578350 is an abundant number, since it is smaller than the sum of its proper divisors (193619778).

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

128578350 is a wasteful number, since it uses less digits than its factorization.

128578350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8949 (or 8944 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 128578350 is about 11339.2393924813. The cubic root of 128578350 is about 504.7263164303.

The spelling of 128578350 in words is "one hundred twenty-eight million, five hundred seventy-eight thousand, three hundred fifty".