428634222 has 8 divisors (see below), whose sum is σ = 857268456. Its totient is φ = 142878072.

The previous prime is 428634169. The next prime is 428634247. The reversal of 428634222 is 222436824.

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

428634222 is an admirable number.

It is a congruent number.

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, 35719513 + ... + 35719524.

It is an arithmetic number, because the mean of its divisors is an integer number (107158557).

Almost surely, 2^428634222 is an apocalyptic number.

428634222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

428634222 is a wasteful number, since it uses less digits than its factorization.

428634222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71439042.

The product of its digits is 36864, while the sum is 33.

The square root of 428634222 is about 20703.4833301066. The cubic root of 428634222 is about 753.9842616213.

The spelling of 428634222 in words is "four hundred twenty-eight million, six hundred thirty-four thousand, two hundred twenty-two".