422418728 has 16 divisors (see below), whose sum is σ = 792972180. Its totient is φ = 210959488.

The previous prime is 422418691. The next prime is 422418739. The reversal of 422418728 is 827814224.

It can be written as a sum of positive squares in 2 ways, for example, as 416078404 + 6340324 = 20398^2 + 2518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 422418691 and 422418700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23951 + ... + 37662.

Almost surely, 2^422418728 is an apocalyptic number.

It is an amenable number.

422418728 is a deficient number, since it is larger than the sum of its proper divisors (370553452).

422418728 is a wasteful number, since it uses less digits than its factorization.

422418728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62476 (or 62472 counting only the distinct ones).

The product of its digits is 57344, while the sum is 38.

The square root of 422418728 is about 20552.8277373212. The cubic root of 422418728 is about 750.3220708592.

The spelling of 422418728 in words is "four hundred twenty-two million, four hundred eighteen thousand, seven hundred twenty-eight".