428219 has 6 divisors (see below), whose sum is σ = 470820. Its totient is φ = 389180.

The previous prime is 428177. The next prime is 428221. The reversal of 428219 is 912824.

It is a de Polignac number, because none of the positive numbers 2^k-428219 is a prime.

It is a super-2 number, since 2×428219² = 366743023922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (428249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1649 + ... + 1890.

It is an arithmetic number, because the mean of its divisors is an integer number (78470).

2⁴²⁸²¹⁹ is an apocalyptic number.

428219 is a deficient number, since it is larger than the sum of its proper divisors (42601).

428219 is a wasteful number, since it uses less digits than its factorization.

428219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561 (or 3550 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 428219 is about 654.3844435804. The cubic root of 428219 is about 75.3740719083.

The spelling of 428219 in words is "four hundred twenty-eight thousand, two hundred nineteen".