422440704 has 144 divisors (see below), whose sum is σ = 1427856640. Its totient is φ = 120683520.

The previous prime is 422440703. The next prime is 422440717. The reversal of 422440704 is 407044224.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×422440704² = 356912296792031232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422440703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44019 + ... + 52749.

Almost surely, 2^422440704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422440704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713928320).

422440704 is an abundant number, since it is smaller than the sum of its proper divisors (1005415936).

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

422440704 is an equidigital number, since it uses as much as digits as its factorization.

422440704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8763 (or 8743 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 422440704 is about 20553.3623526663. The cubic root of 422440704 is about 750.3350822709.

Adding to 422440704 its reverse (407044224), we get a palindrome (829484928).

The spelling of 422440704 in words is "four hundred twenty-two million, four hundred forty thousand, seven hundred four".