422202440 has 64 divisors (see below), whose sum is σ = 1038735360. Its totient is φ = 153169920.

The previous prime is 422202433. The next prime is 422202481. The reversal of 422202440 is 44202224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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, 253049 + ... + 254711.

It is an arithmetic number, because the mean of its divisors is an integer number (16230240).

Almost surely, 2^422202440 is an apocalyptic number.

422202440 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 422202440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519367680).

422202440 is an abundant number, since it is smaller than the sum of its proper divisors (616532920).

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

422202440 is a wasteful number, since it uses less digits than its factorization.

422202440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 422202440 is about 20547.5653058945. The cubic root of 422202440 is about 750.1939883389.

Adding to 422202440 its reverse (44202224), we get a palindrome (466404664).

The spelling of 422202440 in words is "four hundred twenty-two million, two hundred two thousand, four hundred forty".