18242056 has 16 divisors (see below), whose sum is σ = 39090240. Its totient is φ = 7818000.

The previous prime is 18242053. The next prime is 18242057. The reversal of 18242056 is 65024281.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (18242053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162820 + ... + 162931.

It is an arithmetic number, because the mean of its divisors is an integer number (2443140).

Almost surely, 2^18242056 is an apocalyptic number.

It is an amenable number.

18242056 is an abundant number, since it is smaller than the sum of its proper divisors (20848184).

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

18242056 is a wasteful number, since it uses less digits than its factorization.

18242056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325764 (or 325760 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 18242056 is about 4271.0719965835. The cubic root of 18242056 is about 263.2436647468.

The spelling of 18242056 in words is "eighteen million, two hundred forty-two thousand, fifty-six".