128371746 has 8 divisors (see below), whose sum is σ = 256743504. Its totient is φ = 42790580.

The previous prime is 128371723. The next prime is 128371753. The reversal of 128371746 is 647173821.

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

128371746 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10697640 + ... + 10697651.

It is an arithmetic number, because the mean of its divisors is an integer number (32092938).

Almost surely, 2^128371746 is an apocalyptic number.

128371746 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.

128371746 is a wasteful number, since it uses less digits than its factorization.

128371746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21395296.

The product of its digits is 56448, while the sum is 39.

The square root of 128371746 is about 11330.1255950673. The cubic root of 128371746 is about 504.4558344544.

The spelling of 128371746 in words is "one hundred twenty-eight million, three hundred seventy-one thousand, seven hundred forty-six".