18844242 has 16 divisors (see below), whose sum is σ = 38307072. Its totient is φ = 6178320.

The previous prime is 18844207. The next prime is 18844283. The reversal of 18844242 is 24244881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25378 + ... + 26109.

It is an arithmetic number, because the mean of its divisors is an integer number (2394192).

Almost surely, 2^18844242 is an apocalyptic number.

18844242 is an abundant number, since it is smaller than the sum of its proper divisors (19462830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18844242 is a wasteful number, since it uses less digits than its factorization.

18844242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51553.

The product of its digits is 16384, while the sum is 33.

The square root of 18844242 is about 4340.9955079452. The cubic root of 18844242 is about 266.1089967317.

The spelling of 18844242 in words is "eighteen million, eight hundred forty-four thousand, two hundred forty-two".