422512720 has 80 divisors (see below), whose sum is σ = 1139534208. Its totient is φ = 142686720.

The previous prime is 422512703. The next prime is 422512723. The reversal of 422512720 is 27215224.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422512723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31890 + ... + 43150.

Almost surely, 2^422512720 is an apocalyptic number.

422512720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422512720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569767104).

422512720 is an abundant number, since it is smaller than the sum of its proper divisors (717021488).

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

422512720 is a wasteful number, since it uses less digits than its factorization.

422512720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11348 (or 11342 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 422512720 is about 20555.1142054721. The cubic root of 422512720 is about 750.3777178885.

Adding to 422512720 its reverse (27215224), we get a palindrome (449727944).

The spelling of 422512720 in words is "four hundred twenty-two million, five hundred twelve thousand, seven hundred twenty".