428244 has 24 divisors (see below), whose sum is σ = 1010688. Its totient is φ = 141120.

The previous prime is 428231. The next prime is 428249. The reversal of 428244 is 442824.

428244 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is a congruent number.

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

428244 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384 + ... + 1664.

It is an arithmetic number, because the mean of its divisors is an integer number (42112).

2⁴²⁸²⁴⁴ is an apocalyptic number.

It is an amenable number.

428244 is an abundant number, since it is smaller than the sum of its proper divisors (582444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428244 is a wasteful number, since it uses less digits than its factorization.

428244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 413 counting only the distinct ones).

The product of its digits is 2048, while the sum is 24.

The square root of 428244 is about 654.4035452227. The cubic root of 428244 is about 75.3755386929.

The spelling of 428244 in words is "four hundred twenty-eight thousand, two hundred forty-four".