428671608 has 64 divisors (see below), whose sum is σ = 1121437440. Its totient is φ = 136291584.

The previous prime is 428671553. The next prime is 428671613. The reversal of 428671608 is 806176824.

It is a self number, because there is not a number n which added to its sum of digits gives 428671608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243660 + ... + 245412.

It is an arithmetic number, because the mean of its divisors is an integer number (17522460).

Almost surely, 2^428671608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428671608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560718720).

428671608 is an abundant number, since it is smaller than the sum of its proper divisors (692765832).

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

428671608 is a wasteful number, since it uses less digits than its factorization.

428671608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 428671608 is about 20704.3862019621. The cubic root of 428671608 is about 754.0061821265.

The spelling of 428671608 in words is "four hundred twenty-eight million, six hundred seventy-one thousand, six hundred eight".