128628233 has 8 divisors (see below), whose sum is σ = 135616800. Its totient is φ = 121661568.

The previous prime is 128628221. The next prime is 128628281. The reversal of 128628233 is 332826821.

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

It is a cyclic number.

It is not a de Polignac number, because 128628233 - 2⁴ = 128628217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128628193 and 128628202.

It is not an unprimeable number, because it can be changed into a prime (128628433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7385 + ... + 17657.

It is an arithmetic number, because the mean of its divisors is an integer number (16952100).

Almost surely, 2^128628233 is an apocalyptic number.

It is an amenable number.

128628233 is a deficient number, since it is larger than the sum of its proper divisors (6988567).

128628233 is a wasteful number, since it uses less digits than its factorization.

128628233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10951.

The product of its digits is 27648, while the sum is 35.

The square root of 128628233 is about 11341.4387535268. The cubic root of 128628233 is about 504.7915788627.

The spelling of 128628233 in words is "one hundred twenty-eight million, six hundred twenty-eight thousand, two hundred thirty-three".