448240428 has 72 divisors (see below), whose sum is σ = 1227674448. Its totient is φ = 137346048.

The previous prime is 448240423. The next prime is 448240469. The reversal of 448240428 is 824042844.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 448240392 and 448240401.

It is not an unprimeable number, because it can be changed into a prime (448240423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17800 + ... + 34832.

It is an arithmetic number, because the mean of its divisors is an integer number (17051034).

Almost surely, 2^448240428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 448240428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613837224).

448240428 is an abundant number, since it is smaller than the sum of its proper divisors (779434020).

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

448240428 is a wasteful number, since it uses less digits than its factorization.

448240428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17103 (or 17098 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The square root of 448240428 is about 21171.6893043517. The cubic root of 448240428 is about 765.3093302421.

The spelling of 448240428 in words is "four hundred forty-eight million, two hundred forty thousand, four hundred twenty-eight".