442228722 has 48 divisors (see below), whose sum is σ = 964483200. Its totient is φ = 135110976.

The previous prime is 442228691. The next prime is 442228729. The reversal of 442228722 is 227822244.

It is not an unprimeable number, because it can be changed into a prime (442228729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149623 + ... + 152549.

It is an arithmetic number, because the mean of its divisors is an integer number (20093400).

Almost surely, 2^442228722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442228722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482241600).

442228722 is an abundant number, since it is smaller than the sum of its proper divisors (522254478).

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

442228722 is a wasteful number, since it uses less digits than its factorization.

442228722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107 (or 3094 counting only the distinct ones).

The product of its digits is 28672, while the sum is 33.

The square root of 442228722 is about 21029.2349361550. The cubic root of 442228722 is about 761.8725305340.

The spelling of 442228722 in words is "four hundred forty-two million, two hundred twenty-eight thousand, seven hundred twenty-two".