4640222 has 4 divisors (see below), whose sum is σ = 6960336. Its totient is φ = 2320110.

The previous prime is 4640221. The next prime is 4640231. The reversal of 4640222 is 2220464.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 4640194 and 4640203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160054 + ... + 1160057.

It is an arithmetic number, because the mean of its divisors is an integer number (1740084).

Almost surely, 2^4640222 is an apocalyptic number.

4640222 is a deficient number, since it is larger than the sum of its proper divisors (2320114).

4640222 is a wasteful number, since it uses less digits than its factorization.

4640222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320113.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4640222 is about 2154.1174526938. The cubic root of 4640222 is about 166.7936782948.

Adding to 4640222 its reverse (2220464), we get a palindrome (6860686).

The spelling of 4640222 in words is "four million, six hundred forty thousand, two hundred twenty-two".