18326242 has 16 divisors (see below), whose sum is σ = 30438432. Its totient is φ = 8205120.

The previous prime is 18326197. The next prime is 18326249. The reversal of 18326242 is 24262381.

It is a super-2 number, since 2×18326242² = 671702291685128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18326242.

It is not an unprimeable number, because it can be changed into a prime (18326249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4743 + ... + 7690.

It is an arithmetic number, because the mean of its divisors is an integer number (1902402).

Almost surely, 2^18326242 is an apocalyptic number.

18326242 is a deficient number, since it is larger than the sum of its proper divisors (12112190).

18326242 is a wasteful number, since it uses less digits than its factorization.

18326242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12513.

The product of its digits is 4608, while the sum is 28.

The square root of 18326242 is about 4280.9160234697. The cubic root of 18326242 is about 263.6479946658.

The spelling of 18326242 in words is "eighteen million, three hundred twenty-six thousand, two hundred forty-two".