422516440 has 32 divisors (see below), whose sum is σ = 991997280. Its totient is φ = 161658112.

The previous prime is 422516407. The next prime is 422516447. The reversal of 422516440 is 44615224.

It is a junction number, because it is equal to n+sod(n) for n = 422516399 and 422516408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422516447) 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, 228709 + ... + 230548.

It is an arithmetic number, because the mean of its divisors is an integer number (30999915).

Almost surely, 2^422516440 is an apocalyptic number.

422516440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422516440 is an abundant number, since it is smaller than the sum of its proper divisors (569480840).

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

422516440 is a wasteful number, since it uses less digits than its factorization.

422516440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459291 (or 459287 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 422516440 is about 20555.2046937023. The cubic root of 422516440 is about 750.3799201077.

The spelling of 422516440 in words is "four hundred twenty-two million, five hundred sixteen thousand, four hundred forty".