428002 has 8 divisors (see below), whose sum is σ = 646236. Its totient is φ = 212592.

The previous prime is 427997. The next prime is 428003. The reversal of 428002 is 200824.

It can be written as a sum of positive squares in 2 ways, for example, as 370881 + 57121 = 609^2 + 239^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 273 + ... + 964.

2⁴²⁸⁰⁰² is an apocalyptic number.

428002 is a deficient number, since it is larger than the sum of its proper divisors (218234).

428002 is a wasteful number, since it uses less digits than its factorization.

428002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 428002 is about 654.2186178947. The cubic root of 428002 is about 75.3613378188.

Adding to 428002 its reverse (200824), we get a palindrome (628826).

The spelling of 428002 in words is "four hundred twenty-eight thousand, two".