422311640 has 16 divisors (see below), whose sum is σ = 950201280. Its totient is φ = 168924640.

The previous prime is 422311627. The next prime is 422311649. The reversal of 422311640 is 46113224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422311649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5278856 + ... + 5278935.

It is an arithmetic number, because the mean of its divisors is an integer number (59387580).

Almost surely, 2^422311640 is an apocalyptic number.

422311640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422311640 is an abundant number, since it is smaller than the sum of its proper divisors (527889640).

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

422311640 is a wasteful number, since it uses less digits than its factorization.

422311640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10557802 (or 10557798 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 422311640 is about 20550.2223832250. Note that the first 3 decimals coincide. The cubic root of 422311640 is about 750.2586604124.

Adding to 422311640 its reverse (46113224), we get a palindrome (468424864).

The spelling of 422311640 in words is "four hundred twenty-two million, three hundred eleven thousand, six hundred forty".