128303673 has 4 divisors (see below), whose sum is σ = 171071568. Its totient is φ = 85535780.

The previous prime is 128303671. The next prime is 128303687. The reversal of 128303673 is 376303821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128303673 - 2¹ = 128303671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128303671) 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, 21383943 + ... + 21383948.

It is an arithmetic number, because the mean of its divisors is an integer number (42767892).

Almost surely, 2^128303673 is an apocalyptic number.

It is an amenable number.

128303673 is a deficient number, since it is larger than the sum of its proper divisors (42767895).

128303673 is an equidigital number, since it uses as much as digits as its factorization.

128303673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42767894.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 128303673 is about 11327.1211258642. The cubic root of 128303673 is about 504.3666510352.

The spelling of 128303673 in words is "one hundred twenty-eight million, three hundred three thousand, six hundred seventy-three".