422231040 has 792 divisors, whose sum is σ = 1965807792. Its totient is φ = 82575360.

The previous prime is 422231027. The next prime is 422231059. The reversal of 422231040 is 40132224.

It is a tau number, because it is divible by the number of its divisors (792).

It is a super-2 number, since 2×422231040² = 356558102278963200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 24837112 + ... + 24837128.

Almost surely, 2^422231040 is an apocalyptic number.

422231040 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 422231040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (982903896).

422231040 is an abundant number, since it is smaller than the sum of its proper divisors (1543576752).

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

422231040 is a wasteful number, since it uses less digits than its factorization.

422231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 422231040 is about 20548.2612403094. The cubic root of 422231040 is about 750.2109273406.

Adding to 422231040 its reverse (40132224), we get a palindrome (462363264).

The spelling of 422231040 in words is "four hundred twenty-two million, two hundred thirty-one thousand, forty".