650128 has 20 divisors (see below), whose sum is σ = 1272240. Its totient is φ = 321824.

The previous prime is 650107. The next prime is 650179. The reversal of 650128 is 821056.

It is a happy number.

650128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 650099 and 650108.

It is an unprimeable number.

650128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2751 + ... + 2977.

It is an arithmetic number, because the mean of its divisors is an integer number (63612).

2⁶⁵⁰¹²⁸ is an apocalyptic number.

It is an amenable number.

650128 is a deficient number, since it is larger than the sum of its proper divisors (622112).

650128 is a wasteful number, since it uses less digits than its factorization.

650128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 650128 is about 806.3051531523. The cubic root of 650128 is about 86.6295962432.

The spelling of 650128 in words is "six hundred fifty thousand, one hundred twenty-eight".