428168658 has 16 divisors (see below), whose sum is σ = 877224096. Its totient is φ = 139241760.

The previous prime is 428168641. The next prime is 428168669. The reversal of 428168658 is 856861824.

It is a happy 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, 870016 + ... + 870507.

It is an arithmetic number, because the mean of its divisors is an integer number (54826506).

Almost surely, 2^428168658 is an apocalyptic number.

428168658 is an abundant number, since it is smaller than the sum of its proper divisors (449055438).

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

428168658 is a wasteful number, since it uses less digits than its factorization.

428168658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740569.

The product of its digits is 737280, while the sum is 48.

The square root of 428168658 is about 20692.2366601583. The cubic root of 428168658 is about 753.7111810023.

The spelling of 428168658 in words is "four hundred twenty-eight million, one hundred sixty-eight thousand, six hundred fifty-eight".