128348378 has 16 divisors (see below), whose sum is σ = 199384416. Its totient is φ = 61923120.

The previous prime is 128348347. The next prime is 128348387. The reversal of 128348378 is 873843821.

It is a happy number.

It is a super-2 number, since 2×128348378² = 32946612270461768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853 + ... + 16128.

It is an arithmetic number, because the mean of its divisors is an integer number (12461526).

Almost surely, 2^128348378 is an apocalyptic number.

128348378 is a deficient number, since it is larger than the sum of its proper divisors (71036038).

128348378 is a wasteful number, since it uses less digits than its factorization.

128348378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18109.

The product of its digits is 258048, while the sum is 44.

The square root of 128348378 is about 11329.0943150810. The cubic root of 128348378 is about 504.4252232551.

It can be divided in two parts, 12834 and 8378, that added together give a palindrome (21212).

The spelling of 128348378 in words is "one hundred twenty-eight million, three hundred forty-eight thousand, three hundred seventy-eight".