128023386 has 8 divisors (see below), whose sum is σ = 256046784. Its totient is φ = 42674460.

The previous prime is 128023373. The next prime is 128023393. The reversal of 128023386 is 683320821.

It is a sphenic number, since it is the product of 3 distinct primes.

128023386 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10668610 + ... + 10668621.

It is an arithmetic number, because the mean of its divisors is an integer number (32005848).

Almost surely, 2^128023386 is an apocalyptic number.

128023386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128023386 is a wasteful number, since it uses less digits than its factorization.

128023386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21337236.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 128023386 is about 11314.7419767311. The cubic root of 128023386 is about 503.9991102907. Note that the first 3 decimals are identical.

The spelling of 128023386 in words is "one hundred twenty-eight million, twenty-three thousand, three hundred eighty-six".