428366 has 16 divisors (see below), whose sum is σ = 698544. Its totient is φ = 196224.

The previous prime is 428353. The next prime is 428369. The reversal of 428366 is 663824.

It is a Curzon number.

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 428366.

It is not an unprimeable number, because it can be changed into a prime (428369) by changing a digit.

428366 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 7 ways as a sum of consecutive naturals, for example, 1316 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (43659).

2⁴²⁸³⁶⁶ is an apocalyptic number.

428366 is a deficient number, since it is larger than the sum of its proper divisors (270178).

428366 is a wasteful number, since it uses less digits than its factorization.

428366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355.

The product of its digits is 6912, while the sum is 29.

The square root of 428366 is about 654.4967532387. The cubic root of 428366 is about 75.3826957830.

The spelling of 428366 in words is "four hundred twenty-eight thousand, three hundred sixty-six".