18223648 has 24 divisors (see below), whose sum is σ = 36061200. Its totient is φ = 9065280.

The previous prime is 18223637. The next prime is 18223651. The reversal of 18223648 is 84632281.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5403 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (1502550).

Almost surely, 2^18223648 is an apocalyptic number.

It is an amenable number.

18223648 is a deficient number, since it is larger than the sum of its proper divisors (17837552).

18223648 is a wasteful number, since it uses less digits than its factorization.

18223648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920 (or 2912 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 18223648 is about 4268.9164901647. The cubic root of 18223648 is about 263.1550888346.

The spelling of 18223648 in words is "eighteen million, two hundred twenty-three thousand, six hundred forty-eight".