428365 has 8 divisors (see below), whose sum is σ = 587520. Its totient is φ = 293712.

The previous prime is 428353. The next prime is 428369. The reversal of 428365 is 563824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428365 - 2¹⁵ = 395597 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6085 + ... + 6154.

It is an arithmetic number, because the mean of its divisors is an integer number (73440).

2⁴²⁸³⁶⁵ is an apocalyptic number.

It is an amenable number.

428365 is a deficient number, since it is larger than the sum of its proper divisors (159155).

428365 is a wasteful number, since it uses less digits than its factorization.

428365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12251.

The product of its digits is 5760, while the sum is 28.

The square root of 428365 is about 654.4959892925. The cubic root of 428365 is about 75.3826371238.

The spelling of 428365 in words is "four hundred twenty-eight thousand, three hundred sixty-five".