18122824 has 32 divisors (see below), whose sum is σ = 35038080. Its totient is φ = 8783424.

The previous prime is 18122813. The next prime is 18122843. The reversal of 18122824 is 42822181.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 18122792 and 18122801.

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 7 ways as a sum of consecutive naturals, for example, 58879 + ... + 59185.

It is an arithmetic number, because the mean of its divisors is an integer number (1094940).

Almost surely, 2^18122824 is an apocalyptic number.

It is an amenable number.

18122824 is a deficient number, since it is larger than the sum of its proper divisors (16915256).

18122824 is a wasteful number, since it uses less digits than its factorization.

18122824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 513 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The square root of 18122824 is about 4257.0910255713. The cubic root of 18122824 is about 262.6688811973.

It can be divided in two parts, 181 and 22824, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 18122824 in words is "eighteen million, one hundred twenty-two thousand, eight hundred twenty-four".