422710440 has 128 divisors (see below), whose sum is σ = 1348824960. Its totient is φ = 105611264.

The previous prime is 422710417. The next prime is 422710447. The reversal of 422710440 is 44017224.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 422710440.

It is not an unprimeable number, because it can be changed into a prime (422710447) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 719827 + ... + 720413.

It is an arithmetic number, because the mean of its divisors is an integer number (10537695).

Almost surely, 2^422710440 is an apocalyptic number.

422710440 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 422710440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674412480).

422710440 is an abundant number, since it is smaller than the sum of its proper divisors (926114520).

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

422710440 is a wasteful number, since it uses less digits than its factorization.

422710440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 422710440 is about 20559.9231516074. The cubic root of 422710440 is about 750.4947491149.

Adding to 422710440 its reverse (44017224), we get a palindrome (466727664).

The spelling of 422710440 in words is "four hundred twenty-two million, seven hundred ten thousand, four hundred forty".