654228 has 36 divisors (see below), whose sum is σ = 1752660. Its totient is φ = 205056.

The previous prime is 654223. The next prime is 654229. The reversal of 654228 is 822456.

654228 is a `hidden beast` number, since 654 + 2 + 2 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 242064 = 642^2 + 492^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654228.

It is not an unprimeable number, because it can be changed into a prime (654221) by changing a digit.

654228 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 11 ways as a sum of consecutive naturals, for example, 78 + ... + 1146.

It is an arithmetic number, because the mean of its divisors is an integer number (48685).

2⁶⁵⁴²²⁸ is an apocalyptic number.

654228 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876330).

654228 is an abundant number, since it is smaller than the sum of its proper divisors (1098432).

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

654228 is a wasteful number, since it uses less digits than its factorization.

654228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1091 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 654228 is about 808.8436190018. The cubic root of 654228 is about 86.8113231775.

The spelling of 654228 in words is "six hundred fifty-four thousand, two hundred twenty-eight".