428893 has 4 divisors (see below), whose sum is σ = 454140. Its totient is φ = 403648.

The previous prime is 428873. The next prime is 428899. The reversal of 428893 is 398824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 161604 + 267289 = 402^2 + 517^2 .

It is a de Polignac number, because none of the positive numbers 2^k-428893 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 (428899) 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 3 ways as a sum of consecutive naturals, for example, 12598 + ... + 12631.

It is an arithmetic number, because the mean of its divisors is an integer number (113535).

2⁴²⁸⁸⁹³ is an apocalyptic number.

It is an amenable number.

428893 is a deficient number, since it is larger than the sum of its proper divisors (25247).

428893 is a wasteful number, since it uses less digits than its factorization.

428893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25246.

The product of its digits is 13824, while the sum is 34.

The square root of 428893 is about 654.8992288895. The cubic root of 428893 is about 75.4135964617.

The spelling of 428893 in words is "four hundred twenty-eight thousand, eight hundred ninety-three".