422887212 has 72 divisors (see below), whose sum is σ = 1188205200. Its totient is φ = 125723520.

The previous prime is 422887109. The next prime is 422887217. The reversal of 422887212 is 212788224.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (422887217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10914 + ... + 31062.

It is an arithmetic number, because the mean of its divisors is an integer number (16502850).

Almost surely, 2^422887212 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 422887212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594102600).

422887212 is an abundant number, since it is smaller than the sum of its proper divisors (765317988).

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

422887212 is a wasteful number, since it uses less digits than its factorization.

422887212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20223 (or 20218 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 422887212 is about 20564.2216482900. The cubic root of 422887212 is about 750.5993502448.

The spelling of 422887212 in words is "four hundred twenty-two million, eight hundred eighty-seven thousand, two hundred twelve".