428001 has 16 divisors (see below), whose sum is σ = 662400.
Its totient is φ = 240768.
The previous prime is 427997. The next prime is 428003. The reversal of 428001 is 100824.
Adding to 428001 its reverse (100824), we get a palindrome (528825).
It is not a de Polignac number, because 428001 - 22 = 427997 is a prime.
It is not an unprimeable number, because it can be changed into a prime (428003) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1755 + ... + 1983.
It is an arithmetic number, because the mean of its divisors is an integer number (41400).
2428001 is an apocalyptic number.
It is an amenable number.
428001 is a deficient number, since it is larger than the sum of its proper divisors (234399).
428001 is a wasteful number, since it uses less digits than its factorization.
428001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 328.
The product of its (nonzero) digits is 64, while the sum is 15.
The square root of 428001 is about 654.2178536237.
The cubic root of 428001 is about 75.3612791264.
The spelling of 428001 in words is "four hundred twenty-eight thousand, one".