654128 has 10 divisors (see below), whose sum is σ = 1267404. Its totient is φ = 327056.

The previous prime is 654127. The next prime is 654149. The reversal of 654128 is 821456.

It is a junction number, because it is equal to n+sod(n) for n = 654097 and 654106.

It is not an unprimeable number, because it can be changed into a prime (654127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20426 + ... + 20457.

2⁶⁵⁴¹²⁸ is an apocalyptic number.

It is an amenable number.

654128 is a deficient number, since it is larger than the sum of its proper divisors (613276).

654128 is a wasteful number, since it uses less digits than its factorization.

654128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40891 (or 40885 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 654128 is about 808.7817999931. The cubic root of 654128 is about 86.8068998600.

The spelling of 654128 in words is "six hundred fifty-four thousand, one hundred twenty-eight".