428014 has 4 divisors (see below), whose sum is σ = 642024. Its totient is φ = 214006.

The previous prime is 428003. The next prime is 428023. The reversal of 428014 is 410824.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 427982 and 428000.

It is a congruent number.

It is an unprimeable number.

428014 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 as a sum of consecutive naturals, namely, 107002 + ... + 107005.

It is an arithmetic number, because the mean of its divisors is an integer number (160506).

2⁴²⁸⁰¹⁴ is an apocalyptic number.

428014 is a deficient number, since it is larger than the sum of its proper divisors (214010).

428014 is a wasteful number, since it uses less digits than its factorization.

428014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214009.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 428014 is about 654.2277890766. The cubic root of 428014 is about 75.3620421205.

Adding to 428014 its reverse (410824), we get a palindrome (838838).

The spelling of 428014 in words is "four hundred twenty-eight thousand, fourteen".