428743 has 8 divisors (see below), whose sum is σ = 511488. Its totient is φ = 351384.

The previous prime is 428741. The next prime is 428759. The reversal of 428743 is 347824.

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

It is a cyclic number.

It is not a de Polignac number, because 428743 - 2¹ = 428741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171 + ... + 1492.

It is an arithmetic number, because the mean of its divisors is an integer number (63936).

2⁴²⁸⁷⁴³ is an apocalyptic number.

428743 is a deficient number, since it is larger than the sum of its proper divisors (82745).

428743 is a wasteful number, since it uses less digits than its factorization.

428743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693.

The product of its digits is 5376, while the sum is 28.

The square root of 428743 is about 654.7846974388. The cubic root of 428743 is about 75.4048037804.

The spelling of 428743 in words is "four hundred twenty-eight thousand, seven hundred forty-three".