420226624 has 28 divisors (see below), whose sum is σ = 851635584. Its totient is φ = 205641344.

The previous prime is 420226603. The next prime is 420226627. The reversal of 420226624 is 426622024.

It is a junction number, because it is equal to n+sod(n) for n = 420226592 and 420226601.

It is not an unprimeable number, because it can be changed into a prime (420226627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66844 + ... + 72859.

Almost surely, 2^420226624 is an apocalyptic number.

It is an amenable number.

420226624 is an abundant number, since it is smaller than the sum of its proper divisors (431408960).

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

420226624 is a wasteful number, since it uses less digits than its factorization.

420226624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139762 (or 139752 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 420226624 is about 20499.4298457299. The cubic root of 420226624 is about 749.0219095993.

Adding to 420226624 its reverse (426622024), we get a palindrome (846848648).

The spelling of 420226624 in words is "four hundred twenty million, two hundred twenty-six thousand, six hundred twenty-four".