18528242 has 8 divisors (see below), whose sum is σ = 28263600. Its totient is φ = 9107044.

The previous prime is 18528221. The next prime is 18528281. The reversal of 18528242 is 24282581.

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

It is a super-2 number, since 2×18528242² = 686591503221128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18528199 and 18528208.

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, 78392 + ... + 78627.

It is an arithmetic number, because the mean of its divisors is an integer number (3532950).

Almost surely, 2^18528242 is an apocalyptic number.

18528242 is a deficient number, since it is larger than the sum of its proper divisors (9735358).

18528242 is a wasteful number, since it uses less digits than its factorization.

18528242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157080.

The product of its digits is 10240, while the sum is 32.

The square root of 18528242 is about 4304.4444473126. Note that the first 5 decimals coincide. The cubic root of 18528242 is about 264.6131390868.

The spelling of 18528242 in words is "eighteen million, five hundred twenty-eight thousand, two hundred forty-two".