422331552 has 144 divisors (see below), whose sum is σ = 1249728480. Its totient is φ = 135184896.

The previous prime is 422331517. The next prime is 422331557. The reversal of 422331552 is 255133224.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (422331557) 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, 829474 + ... + 829982.

It is an arithmetic number, because the mean of its divisors is an integer number (8678670).

Almost surely, 2^422331552 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 422331552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624864240).

422331552 is an abundant number, since it is smaller than the sum of its proper divisors (827396928).

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

422331552 is a wasteful number, since it uses less digits than its factorization.

422331552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635 (or 624 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 422331552 is about 20550.7068491573. The cubic root of 422331552 is about 750.2704517960.

Adding to 422331552 its reverse (255133224), we get a palindrome (677464776).

The spelling of 422331552 in words is "four hundred twenty-two million, three hundred thirty-one thousand, five hundred fifty-two".