428603818 has 8 divisors (see below), whose sum is σ = 665074980. Its totient is φ = 206912160.

The previous prime is 428603807. The next prime is 428603831. The reversal of 428603818 is 818306824.

It can be written as a sum of positive squares in 2 ways, for example, as 376864569 + 51739249 = 19413^2 + 7193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3694803 + ... + 3694918.

Almost surely, 2^428603818 is an apocalyptic number.

428603818 is a deficient number, since it is larger than the sum of its proper divisors (236471162).

428603818 is a wasteful number, since it uses less digits than its factorization.

428603818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7389752.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 428603818 is about 20702.7490445110. The cubic root of 428603818 is about 753.9664339271.

The spelling of 428603818 in words is "four hundred twenty-eight million, six hundred three thousand, eight hundred eighteen".