655210128 has 20 divisors (see below), whose sum is σ = 1692626288. Its totient is φ = 218403360.

The previous prime is 655210093. The next prime is 655210133. The reversal of 655210128 is 821012556.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 655210095 and 655210104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6825058 + ... + 6825153.

Almost surely, 2^655210128 is an apocalyptic number.

It is an amenable number.

655210128 is an abundant number, since it is smaller than the sum of its proper divisors (1037416160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655210128 is a wasteful number, since it uses less digits than its factorization.

655210128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13650222 (or 13650216 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 655210128 is about 25597.0726451288. The cubic root of 655210128 is about 868.5474188514.

The spelling of 655210128 in words is "six hundred fifty-five million, two hundred ten thousand, one hundred twenty-eight".