18223028 has 12 divisors (see below), whose sum is σ = 32569152. Its totient is φ = 8917560.

The previous prime is 18223019. The next prime is 18223057. The reversal of 18223028 is 82032281.

It is a junction number, because it is equal to n+sod(n) for n = 18222988 and 18223006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48278 + ... + 48653.

It is an arithmetic number, because the mean of its divisors is an integer number (2714096).

Almost surely, 2^18223028 is an apocalyptic number.

It is an amenable number.

18223028 is a deficient number, since it is larger than the sum of its proper divisors (14346124).

18223028 is a wasteful number, since it uses less digits than its factorization.

18223028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96982 (or 96980 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18223028 is about 4268.8438715887. The cubic root of 18223028 is about 263.1521044705.

The spelling of 18223028 in words is "eighteen million, two hundred twenty-three thousand, twenty-eight".