422444550 has 96 divisors (see below), whose sum is σ = 1147426560. Its totient is φ = 102006400.

The previous prime is 422444549. The next prime is 422444567. The reversal of 422444550 is 55444224.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 829696 + ... + 830204.

It is an arithmetic number, because the mean of its divisors is an integer number (11952360).

Almost surely, 2^422444550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422444550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573713280).

422444550 is an abundant number, since it is smaller than the sum of its proper divisors (724982010).

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

422444550 is a wasteful number, since it uses less digits than its factorization.

422444550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 422444550 is about 20553.4559137873. The cubic root of 422444550 is about 750.3373593399.

Adding to 422444550 its reverse (55444224), we get a palindrome (477888774).

The spelling of 422444550 in words is "four hundred twenty-two million, four hundred forty-four thousand, five hundred fifty".