422404320 has 192 divisors, whose sum is σ = 1446197760. Its totient is φ = 103016448.

The previous prime is 422404303. The next prime is 422404337. The reversal of 422404320 is 23404224.

It is an interprime number because it is at equal distance from previous prime (422404303) and next prime (422404337).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 867117 + ... + 867603.

It is an arithmetic number, because the mean of its divisors is an integer number (7532280).

Almost surely, 2^422404320 is an apocalyptic number.

422404320 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 422404320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723098880).

422404320 is an abundant number, since it is smaller than the sum of its proper divisors (1023793440).

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

422404320 is a wasteful number, since it uses less digits than its factorization.

422404320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 422404320 is about 20552.4772229530. The cubic root of 422404320 is about 750.3135400164.

Adding to 422404320 its reverse (23404224), we get a palindrome (445808544).

The spelling of 422404320 in words is "four hundred twenty-two million, four hundred four thousand, three hundred twenty".