422632540 has 48 divisors (see below), whose sum is σ = 974786400. Its totient is φ = 152641280.

The previous prime is 422632519. The next prime is 422632577. The reversal of 422632540 is 45236224.

It is a junction number, because it is equal to n+sod(n) for n = 422632499 and 422632508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26334 + ... + 39226.

It is an arithmetic number, because the mean of its divisors is an integer number (20308050).

Almost surely, 2^422632540 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 422632540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487393200).

422632540 is an abundant number, since it is smaller than the sum of its proper divisors (552153860).

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

422632540 is a wasteful number, since it uses less digits than its factorization.

422632540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13062 (or 13060 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 422632540 is about 20558.0286019842. The cubic root of 422632540 is about 750.4486441636.

Adding to 422632540 its reverse (45236224), we get a palindrome (467868764).

The spelling of 422632540 in words is "four hundred twenty-two million, six hundred thirty-two thousand, five hundred forty".