18223386 has 8 divisors (see below), whose sum is σ = 36446784. Its totient is φ = 6074460.

The previous prime is 18223349. The next prime is 18223409. The reversal of 18223386 is 68332281.

It is a sphenic number, since it is the product of 3 distinct primes.

18223386 is an admirable 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, 1518610 + ... + 1518621.

It is an arithmetic number, because the mean of its divisors is an integer number (4555848).

Almost surely, 2^18223386 is an apocalyptic number.

18223386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18223386 is a wasteful number, since it uses less digits than its factorization.

18223386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037236.

The product of its digits is 13824, while the sum is 33.

The square root of 18223386 is about 4268.8858031107. The cubic root of 18223386 is about 263.1538277084.

The spelling of 18223386 in words is "eighteen million, two hundred twenty-three thousand, three hundred eighty-six".