1723228 has 24 divisors (see below), whose sum is σ = 3355520. Its totient is φ = 768960.

The previous prime is 1723223. The next prime is 1723231. The reversal of 1723228 is 8223271.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1723223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078 + ... + 2146.

2^1723228 is an apocalyptic number.

It is an amenable number.

1723228 is a deficient number, since it is larger than the sum of its proper divisors (1632292).

1723228 is a wasteful number, since it uses less digits than its factorization.

1723228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117 (or 1115 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 1723228 is about 1312.7177914541. The cubic root of 1723228 is about 119.8894351969.

Adding to 1723228 its reverse (8223271), we get a palindrome (9946499).

The spelling of 1723228 in words is "one million, seven hundred twenty-three thousand, two hundred twenty-eight".