18223826 has 8 divisors (see below), whose sum is σ = 27356400. Its totient is φ = 9105028.

The previous prime is 18223817. The next prime is 18223841. The reversal of 18223826 is 62832281.

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

It is a junction number, because it is equal to n+sod(n) for n = 18223792 and 18223801.

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, 1025 + ... + 6123.

It is an arithmetic number, because the mean of its divisors is an integer number (3419550).

Almost surely, 2^18223826 is an apocalyptic number.

18223826 is a deficient number, since it is larger than the sum of its proper divisors (9132574).

18223826 is a wasteful number, since it uses less digits than its factorization.

18223826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6888.

The product of its digits is 9216, while the sum is 32.

The square root of 18223826 is about 4268.9373384954. The cubic root of 18223826 is about 263.1559456235.

The spelling of 18223826 in words is "eighteen million, two hundred twenty-three thousand, eight hundred twenty-six".