422007894 has 192 divisors, whose sum is σ = 1211500800. Its totient is φ = 109000080.

The previous prime is 422007851. The next prime is 422007907. The reversal of 422007894 is 498700224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2357497 + ... + 2357675.

It is an arithmetic number, because the mean of its divisors is an integer number (6309900).

Almost surely, 2^422007894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422007894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605750400).

422007894 is an abundant number, since it is smaller than the sum of its proper divisors (789492906).

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

422007894 is a wasteful number, since it uses less digits than its factorization.

422007894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 422007894 is about 20542.8307202294. The cubic root of 422007894 is about 750.0787437323.

The spelling of 422007894 in words is "four hundred twenty-two million, seven thousand, eight hundred ninety-four".