428107 has 4 divisors (see below), whose sum is σ = 432216. Its totient is φ = 424000.

The previous prime is 428093. The next prime is 428137. The reversal of 428107 is 701824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428107 is a prime.

It is a Duffinian number.

428107 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (428137) 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, 1894 + ... + 2107.

It is an arithmetic number, because the mean of its divisors is an integer number (108054).

2⁴²⁸¹⁰⁷ is an apocalyptic number.

428107 is a deficient number, since it is larger than the sum of its proper divisors (4109).

428107 is a wasteful number, since it uses less digits than its factorization.

428107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 428107 is about 654.2988613776. The cubic root of 428107 is about 75.3675000124.

It can be divided in two parts, 428 and 107, that multiplied together give a square (45796 = 214²).

The spelling of 428107 in words is "four hundred twenty-eight thousand, one hundred seven".