422302520 has 32 divisors (see below), whose sum is σ = 970401600. Its totient is φ = 165326208.

The previous prime is 422302511. The next prime is 422302523. The reversal of 422302520 is 25203224.

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 = 422302492 and 422302501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422302523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110435 + ... + 114194.

It is an arithmetic number, because the mean of its divisors is an integer number (30325050).

Almost surely, 2^422302520 is an apocalyptic number.

422302520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422302520 is an abundant number, since it is smaller than the sum of its proper divisors (548099080).

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

422302520 is a wasteful number, since it uses less digits than its factorization.

422302520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224687 (or 224683 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 422302520 is about 20550.0004866180. Note that the first 3 decimals coincide. The cubic root of 422302520 is about 750.2532596550.

Subtracting from 422302520 its sum of digits (20), we obtain a square (422302500 = 20550²).

Adding to 422302520 its reverse (25203224), we get a palindrome (447505744).

The spelling of 422302520 in words is "four hundred twenty-two million, three hundred two thousand, five hundred twenty".