744228 has 30 divisors (see below), whose sum is σ = 1946406. Its totient is φ = 247968.

The previous prime is 744221. The next prime is 744239. The reversal of 744228 is 822447.

744228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 627264 + 116964 = 792^2 + 342^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (744221) by changing a digit.

744228 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 9 ways as a sum of consecutive naturals, for example, 825 + ... + 1472.

2⁷⁴⁴²²⁸ is an apocalyptic number.

It is an amenable number.

744228 is an abundant number, since it is smaller than the sum of its proper divisors (1202178).

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

744228 is a wasteful number, since it uses less digits than its factorization.

744228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313 (or 2302 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 744228 is about 862.6865015752. The cubic root of 744228 is about 90.6223531530.

The spelling of 744228 in words is "seven hundred forty-four thousand, two hundred twenty-eight".