422338644 has 192 divisors, whose sum is σ = 1376704000. Its totient is φ = 111259008.

The previous prime is 422338643. The next prime is 422338649. The reversal of 422338644 is 446833224.

422338644 is a `hidden beast` number, since 4 + 2 + 2 + 3 + 3 + 8 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 422338599 and 422338608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422338643) 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 63 ways as a sum of consecutive naturals, for example, 481134 + ... + 482010.

Almost surely, 2^422338644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422338644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688352000).

422338644 is an abundant number, since it is smaller than the sum of its proper divisors (954365356).

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

422338644 is a wasteful number, since it uses less digits than its factorization.

422338644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 902 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 422338644 is about 20550.8793972423. The cubic root of 422338644 is about 750.2746514099.

The spelling of 422338644 in words is "four hundred twenty-two million, three hundred thirty-eight thousand, six hundred forty-four".