4640228 has 6 divisors (see below), whose sum is σ = 8120406. Its totient is φ = 2320112.

The previous prime is 4640221. The next prime is 4640231. The reversal of 4640228 is 8220464.

It can be written as a sum of positive squares in only one way, i.e., 3541924 + 1098304 = 1882^2 + 1048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4640197 and 4640206.

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, 580025 + ... + 580032.

It is an arithmetic number, because the mean of its divisors is an integer number (1353401).

Almost surely, 2^4640228 is an apocalyptic number.

It is an amenable number.

4640228 is a deficient number, since it is larger than the sum of its proper divisors (3480178).

4640228 is a wasteful number, since it uses less digits than its factorization.

4640228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160061 (or 1160059 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 4640228 is about 2154.1188453751. The cubic root of 4640228 is about 166.7937501852.

The spelling of 4640228 in words is "four million, six hundred forty thousand, two hundred twenty-eight".