428774 has 8 divisors (see below), whose sum is σ = 681048. Its totient is φ = 201760.

The previous prime is 428759. The next prime is 428777. The reversal of 428774 is 477824.

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

It is a self number, because there is not a number n which added to its sum of digits gives 428774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428777) by changing a digit.

428774 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 in 3 ways as a sum of consecutive naturals, for example, 6272 + ... + 6339.

It is an arithmetic number, because the mean of its divisors is an integer number (85131).

2⁴²⁸⁷⁷⁴ is an apocalyptic number.

428774 is a deficient number, since it is larger than the sum of its proper divisors (252274).

428774 is a wasteful number, since it uses less digits than its factorization.

428774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630.

The product of its digits is 12544, while the sum is 32.

The square root of 428774 is about 654.8083689141. The cubic root of 428774 is about 75.4066211026.

The spelling of 428774 in words is "four hundred twenty-eight thousand, seven hundred seventy-four".