422424640 has 112 divisors (see below), whose sum is σ = 1124492544. Its totient is φ = 149811200.

The previous prime is 422424593. The next prime is 422424679. The reversal of 422424640 is 46424224.

It is a junction number, because it is equal to n+sod(n) for n = 422424599 and 422424608.

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, 142857 + ... + 145783.

It is an arithmetic number, because the mean of its divisors is an integer number (10040112).

Almost surely, 2^422424640 is an apocalyptic number.

422424640 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 422424640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562246272).

422424640 is an abundant number, since it is smaller than the sum of its proper divisors (702067904).

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

422424640 is a wasteful number, since it uses less digits than its factorization.

422424640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996 (or 2986 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 422424640 is about 20552.9715613096. The cubic root of 422424640 is about 750.3255712433.

Adding to 422424640 its reverse (46424224), we get a palindrome (468848864).

The spelling of 422424640 in words is "four hundred twenty-two million, four hundred twenty-four thousand, six hundred forty".