428603816 has 16 divisors (see below), whose sum is σ = 803876640. Its totient is φ = 214236720.

The previous prime is 428603807. The next prime is 428603831. The reversal of 428603816 is 618306824.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 428603816.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30671 + ... + 42401.

It is an arithmetic number, because the mean of its divisors is an integer number (50242290).

Almost surely, 2^428603816 is an apocalyptic number.

It is an amenable number.

428603816 is a deficient number, since it is larger than the sum of its proper divisors (375272824).

428603816 is a wasteful number, since it uses less digits than its factorization.

428603816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16304 (or 16300 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 428603816 is about 20702.7489962082. The cubic root of 428603816 is about 753.9664327543.

The spelling of 428603816 in words is "four hundred twenty-eight million, six hundred three thousand, eight hundred sixteen".