420278676 has 12 divisors (see below), whose sum is σ = 980650272. Its totient is φ = 140092888.

The previous prime is 420278629. The next prime is 420278681. The reversal of 420278676 is 676872024.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 17511600 + ... + 17511623.

It is an arithmetic number, because the mean of its divisors is an integer number (81720856).

Almost surely, 2^420278676 is an apocalyptic number.

It is an amenable number.

420278676 is an abundant number, since it is smaller than the sum of its proper divisors (560371596).

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

420278676 is a wasteful number, since it uses less digits than its factorization.

420278676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35023230 (or 35023228 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 420278676 is about 20500.6994027033. The cubic root of 420278676 is about 749.0528345626.

The spelling of 420278676 in words is "four hundred twenty million, two hundred seventy-eight thousand, six hundred seventy-six".