428887772804 has 6 divisors (see below), whose sum is σ = 750553602414. Its totient is φ = 214443886400.

The previous prime is 428887772773. The next prime is 428887772821. The reversal of 428887772804 is 408277788824.

It can be written as a sum of positive squares in only one way, i.e., 411134875204 + 17752897600 = 641198^2 + 133240^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53610971597 + ... + 53610971604.

It is an arithmetic number, because the mean of its divisors is an integer number (125092267069).

Almost surely, 2^428887772804 is an apocalyptic number.

It is an amenable number.

428887772804 is a deficient number, since it is larger than the sum of its proper divisors (321665829610).

428887772804 is a wasteful number, since it uses less digits than its factorization.

428887772804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107221943205 (or 107221943203 counting only the distinct ones).

The product of its (nonzero) digits is 89915392, while the sum is 65.

The spelling of 428887772804 in words is "four hundred twenty-eight billion, eight hundred eighty-seven million, seven hundred seventy-two thousand, eight hundred four".