428837 has 4 divisors (see below), whose sum is σ = 433356. Its totient is φ = 424320.

The previous prime is 428833. The next prime is 428843. The reversal of 428837 is 738824.

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 279841 + 148996 = 529^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 428837 - 2² = 428833 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 (428833) 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, 2114 + ... + 2307.

It is an arithmetic number, because the mean of its divisors is an integer number (108339).

2⁴²⁸⁸³⁷ is an apocalyptic number.

It is an amenable number.

428837 is a deficient number, since it is larger than the sum of its proper divisors (4519).

428837 is an equidigital number, since it uses as much as digits as its factorization.

428837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518.

The product of its digits is 10752, while the sum is 32.

The square root of 428837 is about 654.8564728244. The cubic root of 428837 is about 75.4103141005.

The spelling of 428837 in words is "four hundred twenty-eight thousand, eight hundred thirty-seven".