422247000 has 128 divisors (see below), whose sum is σ = 1505687040. Its totient is φ = 96508800.

The previous prime is 422246983. The next prime is 422247017. The reversal of 422247000 is 742224.

It is an interprime number because it is at equal distance from previous prime (422246983) and next prime (422247017).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10947 + ... + 31053.

It is an arithmetic number, because the mean of its divisors is an integer number (11763180).

Almost surely, 2^422247000 is an apocalyptic number.

422247000 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 422247000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (752843520).

422247000 is an abundant number, since it is smaller than the sum of its proper divisors (1083440040).

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

422247000 is a wasteful number, since it uses less digits than its factorization.

422247000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20138 (or 20124 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 422247000 is about 20548.6495906665. The cubic root of 422247000 is about 750.2203796818.

Adding to 422247000 its reverse (742224), we get a palindrome (422989224).

The spelling of 422247000 in words is "four hundred twenty-two million, two hundred forty-seven thousand".