420303680 has 28 divisors (see below), whose sum is σ = 1000848900. Its totient is φ = 168121344.

The previous prime is 420303677. The next prime is 420303703. The reversal of 420303680 is 86303024.

It can be written as a sum of positive squares in 2 ways, for example, as 255232576 + 165071104 = 15976^2 + 12848^2 .

It is a congruent number.

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, 656405 + ... + 657044.

Almost surely, 2^420303680 is an apocalyptic number.

420303680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420303680 is an abundant number, since it is smaller than the sum of its proper divisors (580545220).

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

420303680 is a wasteful number, since it uses less digits than its factorization.

420303680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313466 (or 1313456 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 420303680 is about 20501.3092264860. The cubic root of 420303680 is about 749.0676889491.

The spelling of 420303680 in words is "four hundred twenty million, three hundred three thousand, six hundred eighty".