428976656 has 10 divisors (see below), whose sum is σ = 831142302. Its totient is φ = 214488320.

The previous prime is 428976649. The next prime is 428976673. The reversal of 428976656 is 656679824.

It can be written as a sum of positive squares in only one way, i.e., 356454400 + 72522256 = 18880^2 + 8516^2 .

It is a junction number, because it is equal to n+sod(n) for n = 428976598 and 428976607.

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 as a sum of consecutive naturals, namely, 13405505 + ... + 13405536.

Almost surely, 2^428976656 is an apocalyptic number.

It is an amenable number.

428976656 is a deficient number, since it is larger than the sum of its proper divisors (402165646).

428976656 is a wasteful number, since it uses less digits than its factorization.

428976656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26811049 (or 26811043 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The square root of 428976656 is about 20711.7516400714. The cubic root of 428976656 is about 754.1849930829.

The spelling of 428976656 in words is "four hundred twenty-eight million, nine hundred seventy-six thousand, six hundred fifty-six".