428933 has 4 divisors (see below), whose sum is σ = 430860. Its totient is φ = 427008.

The previous prime is 428899. The next prime is 428951. The reversal of 428933 is 339824.

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 351649 + 77284 = 593^2 + 278^2 .

It is a cyclic number.

It is not a de Polignac number, because 428933 - 2⁸ = 428677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 428896 and 428905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428033) 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, 578 + ... + 1091.

It is an arithmetic number, because the mean of its divisors is an integer number (107715).

2⁴²⁸⁹³³ is an apocalyptic number.

It is an amenable number.

428933 is a deficient number, since it is larger than the sum of its proper divisors (1927).

428933 is a wasteful number, since it uses less digits than its factorization.

428933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926.

The product of its digits is 5184, while the sum is 29.

The square root of 428933 is about 654.9297672270. The cubic root of 428933 is about 75.4159408305.

The spelling of 428933 in words is "four hundred twenty-eight thousand, nine hundred thirty-three".