128349394 has 8 divisors (see below), whose sum is σ = 193235328. Its totient is φ = 63937620.

The previous prime is 128349379. The next prime is 128349437. The reversal of 128349394 is 493943821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 128349394.

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, 117862 + ... + 118945.

It is an arithmetic number, because the mean of its divisors is an integer number (24154416).

Almost surely, 2^128349394 is an apocalyptic number.

128349394 is a deficient number, since it is larger than the sum of its proper divisors (64885934).

128349394 is a wasteful number, since it uses less digits than its factorization.

128349394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237080.

The product of its digits is 186624, while the sum is 43.

The square root of 128349394 is about 11329.1391552933. The cubic root of 128349394 is about 504.4265542541.

The spelling of 128349394 in words is "one hundred twenty-eight million, three hundred forty-nine thousand, three hundred ninety-four".