428402 has 8 divisors (see below), whose sum is σ = 692076. Its totient is φ = 197712.

The previous prime is 428401. The next prime is 428411. The reversal of 428402 is 204824.

It can be written as a sum of positive squares in 2 ways, for example, as 395641 + 32761 = 629^2 + 181^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428402.

It is not an unprimeable number, because it can be changed into a prime (428401) 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, 8213 + ... + 8264.

2⁴²⁸⁴⁰² is an apocalyptic number.

428402 is a deficient number, since it is larger than the sum of its proper divisors (263674).

428402 is a wasteful number, since it uses less digits than its factorization.

428402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16492.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 428402 is about 654.5242547072. The cubic root of 428402 is about 75.3848074515.

The spelling of 428402 in words is "four hundred twenty-eight thousand, four hundred two".