128233306 has 4 divisors (see below), whose sum is σ = 192349962. Its totient is φ = 64116652.

The previous prime is 128233291. The next prime is 128233319. The reversal of 128233306 is 603332821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 68310225 + 59923081 = 8265^2 + 7741^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32058325 + ... + 32058328.

Almost surely, 2^128233306 is an apocalyptic number.

128233306 is a deficient number, since it is larger than the sum of its proper divisors (64116656).

128233306 is an equidigital number, since it uses as much as digits as its factorization.

128233306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64116655.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 128233306 is about 11324.0145708137. The cubic root of 128233306 is about 504.2744290499.

It can be divided in two parts, 12823 and 3306, that added together give a square (16129 = 127²).

The spelling of 128233306 in words is "one hundred twenty-eight million, two hundred thirty-three thousand, three hundred six".