428307 has 8 divisors (see below), whose sum is σ = 623040. Its totient is φ = 259560.

The previous prime is 428303. The next prime is 428339. The reversal of 428307 is 703824.

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

It is not a de Polignac number, because 428307 - 2² = 428303 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428307.

It is not an unprimeable number, because it can be changed into a prime (428303) 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, 6457 + ... + 6522.

It is an arithmetic number, because the mean of its divisors is an integer number (77880).

2⁴²⁸³⁰⁷ is an apocalyptic number.

428307 is a deficient number, since it is larger than the sum of its proper divisors (194733).

428307 is a wasteful number, since it uses less digits than its factorization.

428307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12993.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 428307 is about 654.4516788885. The cubic root of 428307 is about 75.3792347370.

The spelling of 428307 in words is "four hundred twenty-eight thousand, three hundred seven".