428683656 has 32 divisors (see below), whose sum is σ = 1078136640. Its totient is φ = 142037568.

The previous prime is 428683639. The next prime is 428683669. The reversal of 428683656 is 656386824.

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, 49471 + ... + 57486.

It is an arithmetic number, because the mean of its divisors is an integer number (33691770).

Almost surely, 2^428683656 is an apocalyptic number.

It is an amenable number.

428683656 is an abundant number, since it is smaller than the sum of its proper divisors (649452984).

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

428683656 is a wasteful number, since it uses less digits than its factorization.

428683656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107133 (or 107129 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The square root of 428683656 is about 20704.6771527595. The cubic root of 428683656 is about 754.0132459498.

The spelling of 428683656 in words is "four hundred twenty-eight million, six hundred eighty-three thousand, six hundred fifty-six".