442286544 has 120 divisors (see below), whose sum is σ = 1357734528. Its totient is φ = 123648000.

The previous prime is 442286543. The next prime is 442286549. The reversal of 442286544 is 445682244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442286543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108544 + ... + 112544.

Almost surely, 2^442286544 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 442286544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678867264).

442286544 is an abundant number, since it is smaller than the sum of its proper divisors (915447984).

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

442286544 is a wasteful number, since it uses less digits than its factorization.

442286544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073 (or 4060 counting only the distinct ones).

The product of its digits is 245760, while the sum is 39.

The square root of 442286544 is about 21030.6096915900. The cubic root of 442286544 is about 761.9057343728.

The spelling of 442286544 in words is "four hundred forty-two million, two hundred eighty-six thousand, five hundred forty-four".