422453220 has 192 divisors, whose sum is σ = 1436037120. Its totient is φ = 90643968.

The previous prime is 422453197. The next prime is 422453221. The reversal of 422453220 is 22354224.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (422453221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1332502 + ... + 1332818.

It is an arithmetic number, because the mean of its divisors is an integer number (7479360).

Almost surely, 2^422453220 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 422453220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718018560).

422453220 is an abundant number, since it is smaller than the sum of its proper divisors (1013583900).

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

422453220 is a wasteful number, since it uses less digits than its factorization.

422453220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 422453220 is about 20553.6668261408. Note that the first 3 decimals coincide. The cubic root of 422453220 is about 750.3424924636.

The spelling of 422453220 in words is "four hundred twenty-two million, four hundred fifty-three thousand, two hundred twenty".