422521632 has 108 divisors (see below), whose sum is σ = 1301232114. Its totient is φ = 129991680.

The previous prime is 422521613. The next prime is 422521633. The reversal of 422521632 is 236125224.

It is a happy number.

422521632 is a `hidden beast` number, since 4 + 2 + 2 + 5 + 21 + 632 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 285069456 + 137452176 = 16884^2 + 11724^2 .

It is a junction number, because it is equal to n+sod(n) for n = 422521596 and 422521605.

It is not an unprimeable number, because it can be changed into a prime (422521633) 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 17 ways as a sum of consecutive naturals, for example, 44332 + ... + 53012.

Almost surely, 2^422521632 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 422521632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650616057).

422521632 is an abundant number, since it is smaller than the sum of its proper divisors (878710482).

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

422521632 is a wasteful number, since it uses less digits than its factorization.

422521632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8723 (or 8699 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 422521632 is about 20555.3309873619. The cubic root of 422521632 is about 750.3829937211.

Adding to 422521632 its reverse (236125224), we get a palindrome (658646856).

The spelling of 422521632 in words is "four hundred twenty-two million, five hundred twenty-one thousand, six hundred thirty-two".