422455000 has 80 divisors (see below), whose sum is σ = 1079935560. Its totient is φ = 153600000.

The previous prime is 422454973. The next prime is 422455001. The reversal of 422455000 is 554224.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422455001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 51160 + ... + 58840.

Almost surely, 2^422455000 is an apocalyptic number.

422455000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422455000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539967780).

422455000 is an abundant number, since it is smaller than the sum of its proper divisors (657480560).

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

422455000 is a wasteful number, since it uses less digits than its factorization.

422455000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7718 (or 7699 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 422455000 is about 20553.7101273712. The cubic root of 422455000 is about 750.3435463142.

The spelling of 422455000 in words is "four hundred twenty-two million, four hundred fifty-five thousand".