4638222 has 20 divisors (see below), whose sum is σ = 10393416. Its totient is φ = 1546020.

The previous prime is 4638211. The next prime is 4638239. The reversal of 4638222 is 2228364.

4638222 is a `hidden beast` number, since 4 + 638 + 2 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14154 + ... + 14477.

Almost surely, 2^4638222 is an apocalyptic number.

4638222 is an abundant number, since it is smaller than the sum of its proper divisors (5755194).

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

4638222 is a wasteful number, since it uses less digits than its factorization.

4638222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28645 (or 28636 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 4638222 is about 2153.6531754208. The cubic root of 4638222 is about 166.7697113887.

The spelling of 4638222 in words is "four million, six hundred thirty-eight thousand, two hundred twenty-two".