1726228 has 12 divisors (see below), whose sum is σ = 3452512. Its totient is φ = 739800.

The previous prime is 1726217. The next prime is 1726237. The reversal of 1726228 is 8226271.

1726228 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 61651 = 1726228 / (1 + 7 + 2 + 6 + 2 + 2 + 8).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1726196 and 1726205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30798 + ... + 30853.

2^1726228 is an apocalyptic number.

It is an amenable number.

1726228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1726228 is a wasteful number, since it uses less digits than its factorization.

1726228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61662 (or 61660 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 1726228 is about 1313.8599620964. The cubic root of 1726228 is about 119.9589674525.

It can be divided in two parts, 172 and 6228, that added together give a square (6400 = 80²).

The spelling of 1726228 in words is "one million, seven hundred twenty-six thousand, two hundred twenty-eight".