449128 has 16 divisors (see below), whose sum is σ = 869760. Its totient is φ = 217200.

The previous prime is 449117. The next prime is 449129. The reversal of 449128 is 821944.

It is a junction number, because it is equal to n+sod(n) for n = 449096 and 449105.

It is not an unprimeable number, because it can be changed into a prime (449129) 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, 658 + ... + 1153.

It is an arithmetic number, because the mean of its divisors is an integer number (54360).

2⁴⁴⁹¹²⁸ is an apocalyptic number.

It is an amenable number.

449128 is a deficient number, since it is larger than the sum of its proper divisors (420632).

449128 is a wasteful number, since it uses less digits than its factorization.

449128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848 (or 1844 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 449128 is about 670.1701276542. The cubic root of 449128 is about 76.5814133199.

Subtracting 449128 from its reverse (821944), we obtain a triangular number (372816 = T₈₆₃).

The spelling of 449128 in words is "four hundred forty-nine thousand, one hundred twenty-eight".