672228 has 36 divisors (see below), whose sum is σ = 1729728. Its totient is φ = 220080.

The previous prime is 672227. The next prime is 672229. The reversal of 672228 is 822276.

It is an interprime number because it is at equal distance from previous prime (672227) and next prime (672229).

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

It is not an unprimeable number, because it can be changed into a prime (672223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2425 + ... + 2687.

It is an arithmetic number, because the mean of its divisors is an integer number (48048).

2⁶⁷²²²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864864).

672228 is an abundant number, since it is smaller than the sum of its proper divisors (1057500).

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

672228 is a wasteful number, since it uses less digits than its factorization.

672228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 339 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 672228 is about 819.8951152434. The cubic root of 672228 is about 87.6002877328.

It can be divided in two parts, 672 and 228, that added together give a square (900 = 30²).

The spelling of 672228 in words is "six hundred seventy-two thousand, two hundred twenty-eight".