422444240 has 20 divisors (see below), whose sum is σ = 982183044. Its totient is φ = 168977664.

The previous prime is 422444227. The next prime is 422444257. The reversal of 422444240 is 42444224.

It can be written as a sum of positive squares in 2 ways, for example, as 147282496 + 275161744 = 12136^2 + 16588^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2640197 + ... + 2640356.

Almost surely, 2^422444240 is an apocalyptic number.

422444240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422444240 is an abundant number, since it is smaller than the sum of its proper divisors (559738804).

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

422444240 is a wasteful number, since it uses less digits than its factorization.

422444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280566 (or 5280560 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 422444240 is about 20553.4483724751. The cubic root of 422444240 is about 750.3371758013.

Adding to 422444240 its reverse (42444224), we get a palindrome (464888464).

The spelling of 422444240 in words is "four hundred twenty-two million, four hundred forty-four thousand, two hundred forty".