422166220 has 96 divisors (see below), whose sum is σ = 1048578048. Its totient is φ = 139775232.

The previous prime is 422166211. The next prime is 422166221. The reversal of 422166220 is 22661224.

It is not an unprimeable number, because it can be changed into a prime (422166221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 545754 + ... + 546526.

It is an arithmetic number, because the mean of its divisors is an integer number (10922688).

Almost surely, 2^422166220 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 422166220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524289024).

422166220 is an abundant number, since it is smaller than the sum of its proper divisors (626411828).

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

422166220 is a wasteful number, since it uses less digits than its factorization.

422166220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 422166220 is about 20546.6839173624. The cubic root of 422166220 is about 750.1725351206.

The spelling of 422166220 in words is "four hundred twenty-two million, one hundred sixty-six thousand, two hundred twenty".