422331000 has 576 divisors, whose sum is σ = 1757414880. Its totient is φ = 83865600.

The previous prime is 422330981. The next prime is 422331071. The reversal of 422331000 is 133224.

It is a super-2 number, since 2×422331000² = 356726947122000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 24842992 + ... + 24843008.

Almost surely, 2^422331000 is an apocalyptic number.

422331000 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 422331000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (878707440).

422331000 is an abundant number, since it is smaller than the sum of its proper divisors (1335083880).

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

422331000 is a wasteful number, since it uses less digits than its factorization.

422331000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 422331000 is about 20550.6934189579. The cubic root of 422331000 is about 750.2701249206.

Adding to 422331000 its reverse (133224), we get a palindrome (422464224).

The spelling of 422331000 in words is "four hundred twenty-two million, three hundred thirty-one thousand".