655428 has 24 divisors (see below), whose sum is σ = 1542688. Its totient is φ = 216576.

The previous prime is 655399. The next prime is 655439. The reversal of 655428 is 824556.

It is a junction number, because it is equal to n+sod(n) for n = 655395 and 655404.

It is an unprimeable number.

655428 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 7 ways as a sum of consecutive naturals, for example, 2175 + ... + 2457.

2⁶⁵⁵⁴²⁸ is an apocalyptic number.

It is an amenable number.

655428 is an abundant number, since it is smaller than the sum of its proper divisors (887260).

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

655428 is a wasteful number, since it uses less digits than its factorization.

655428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 481 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 655428 is about 809.5850789139. The cubic root of 655428 is about 86.8643678654.

The spelling of 655428 in words is "six hundred fifty-five thousand, four hundred twenty-eight".