422244020 has 36 divisors (see below), whose sum is σ = 974656452. Its totient is φ = 153542400.

The previous prime is 422243999. The next prime is 422244073. The reversal of 422244020 is 20442224.

422244020 = 1816² + 1817² + ... + 1935².

It can be written as a sum of positive squares in 2 ways, for example, as 155052304 + 267191716 = 12452^2 + 16346^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 422243983 and 422244001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84821 + ... + 89660.

Almost surely, 2^422244020 is an apocalyptic number.

It is an amenable number.

422244020 is an abundant number, since it is smaller than the sum of its proper divisors (552412432).

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

422244020 is a wasteful number, since it uses less digits than its factorization.

422244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174512 (or 174499 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 422244020 is about 20548.5770796909. The cubic root of 422244020 is about 750.2186147891.

Adding to 422244020 its reverse (20442224), we get a palindrome (442686244).

It can be divided in two parts, 422 and 244020, that added together give a palindrome (244442).

The spelling of 422244020 in words is "four hundred twenty-two million, two hundred forty-four thousand, twenty".