428375 has 16 divisors (see below), whose sum is σ = 561600. Its totient is φ = 325600.

The previous prime is 428369. The next prime is 428401. The reversal of 428375 is 573824.

It is a happy number.

It is not a de Polignac number, because 428375 - 2¹⁰ = 427351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2801 + ... + 2949.

It is an arithmetic number, because the mean of its divisors is an integer number (35100).

2⁴²⁸³⁷⁵ is an apocalyptic number.

428375 is a deficient number, since it is larger than the sum of its proper divisors (133225).

428375 is a wasteful number, since it uses less digits than its factorization.

428375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 177 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 428375 is about 654.5036287142. The cubic root of 428375 is about 75.3832237112.

It can be divided in two parts, 42837 and 5, that multiplied together give a triangular number (214185 = T₆₅₄).

The spelling of 428375 in words is "four hundred twenty-eight thousand, three hundred seventy-five".