428655 has 24 divisors (see below), whose sum is σ = 744336. Its totient is φ = 209920.

The previous prime is 428639. The next prime is 428657. The reversal of 428655 is 556824.

It is not a de Polignac number, because 428655 - 2⁴ = 428639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10435 + ... + 10475.

It is an arithmetic number, because the mean of its divisors is an integer number (31014).

2⁴²⁸⁶⁵⁵ is an apocalyptic number.

428655 is a deficient number, since it is larger than the sum of its proper divisors (315681).

428655 is a wasteful number, since it uses less digits than its factorization.

428655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 66 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 428655 is about 654.7174963295. The cubic root of 428655 is about 75.3996444528.

The spelling of 428655 in words is "four hundred twenty-eight thousand, six hundred fifty-five".