420625672 has 16 divisors (see below), whose sum is σ = 788893740. Its totient is φ = 210254016.

The previous prime is 420625669. The next prime is 420625687. The reversal of 420625672 is 276526024.

It can be written as a sum of positive squares in 2 ways, for example, as 401842116 + 18783556 = 20046^2 + 4334^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44778 + ... + 53350.

Almost surely, 2^420625672 is an apocalyptic number.

It is an amenable number.

420625672 is a deficient number, since it is larger than the sum of its proper divisors (368268068).

420625672 is a wasteful number, since it uses less digits than its factorization.

420625672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14712 (or 14708 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 420625672 is about 20509.1606849232. The cubic root of 420625672 is about 749.2589254674.

The spelling of 420625672 in words is "four hundred twenty million, six hundred twenty-five thousand, six hundred seventy-two".