128323474 has 8 divisors (see below), whose sum is σ = 197687628. Its totient is φ = 62427600.

The previous prime is 128323471. The next prime is 128323487. The reversal of 128323474 is 474323821.

It can be written as a sum of positive squares in 2 ways, for example, as 126900225 + 1423249 = 11265^2 + 1193^2 .

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

It is not an unprimeable number, because it can be changed into a prime (128323471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866977 + ... + 867124.

Almost surely, 2^128323474 is an apocalyptic number.

128323474 is a deficient number, since it is larger than the sum of its proper divisors (69364154).

128323474 is a wasteful number, since it uses less digits than its factorization.

128323474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734140.

The product of its digits is 32256, while the sum is 34.

The square root of 128323474 is about 11327.9951447730. The cubic root of 128323474 is about 504.3925958636.

The spelling of 128323474 in words is "one hundred twenty-eight million, three hundred twenty-three thousand, four hundred seventy-four".