18263828 has 12 divisors (see below), whose sum is σ = 34867392. Its totient is φ = 8301720.

The previous prime is 18263809. The next prime is 18263837. The reversal of 18263828 is 82836281.

It is a junction number, because it is equal to n+sod(n) for n = 18263791 and 18263800.

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, 207500 + ... + 207587.

It is an arithmetic number, because the mean of its divisors is an integer number (2905616).

Almost surely, 2^18263828 is an apocalyptic number.

It is an amenable number.

18263828 is a deficient number, since it is larger than the sum of its proper divisors (16603564).

18263828 is a wasteful number, since it uses less digits than its factorization.

18263828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415102 (or 415100 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 18263828 is about 4273.6200111849. The cubic root of 18263828 is about 263.3483507254.

It can be divided in two parts, 18263 and 828, that added together give a palindrome (19091).

The spelling of 18263828 in words is "eighteen million, two hundred sixty-three thousand, eight hundred twenty-eight".