422843000 has 64 divisors (see below), whose sum is σ = 992908800. Its totient is φ = 168547200.

The previous prime is 422842907. The next prime is 422843021. The reversal of 422843000 is 348224.

It is a super-3 number, since 3×422843000³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388457 + ... + 389543.

It is an arithmetic number, because the mean of its divisors is an integer number (15514200).

Almost surely, 2^422843000 is an apocalyptic number.

422843000 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 422843000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496454400).

422843000 is an abundant number, since it is smaller than the sum of its proper divisors (570065800).

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

422843000 is a wasteful number, since it uses less digits than its factorization.

422843000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 422843000 is about 20563.1466463671. The cubic root of 422843000 is about 750.5731914534.

The spelling of 422843000 in words is "four hundred twenty-two million, eight hundred forty-three thousand".