2223428 has 6 divisors (see below), whose sum is σ = 3891006. Its totient is φ = 1111712.

The previous prime is 2223421. The next prime is 2223443. The reversal of 2223428 is 8243222.

It can be written as a sum of positive squares in only one way, i.e., 2166784 + 56644 = 1472^2 + 238^2 .

It is not an unprimeable number, because it can be changed into a prime (2223421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277925 + ... + 277932.

It is an arithmetic number, because the mean of its divisors is an integer number (648501).

2^2223428 is an apocalyptic number.

It is an amenable number.

2223428 is a deficient number, since it is larger than the sum of its proper divisors (1667578).

2223428 is a wasteful number, since it uses less digits than its factorization.

2223428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555861 (or 555859 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 2223428 is about 1491.1163603153. The cubic root of 2223428 is about 130.5191860734.

The spelling of 2223428 in words is "two million, two hundred twenty-three thousand, four hundred twenty-eight".