428801656 has 32 divisors (see below), whose sum is σ = 837774000. Its totient is φ = 205502976.

The previous prime is 428801647. The next prime is 428801677. The reversal of 428801656 is 656108824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25600 + ... + 38896.

Almost surely, 2^428801656 is an apocalyptic number.

It is an amenable number.

428801656 is a deficient number, since it is larger than the sum of its proper divisors (408972344).

428801656 is a wasteful number, since it uses less digits than its factorization.

428801656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13471 (or 13467 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 428801656 is about 20707.5265543715. The cubic root of 428801656 is about 754.0824231463.

The spelling of 428801656 in words is "four hundred twenty-eight million, eight hundred one thousand, six hundred fifty-six".