18442254 has 8 divisors (see below), whose sum is σ = 36884520. Its totient is φ = 6147416.

The previous prime is 18442247. The next prime is 18442337. The reversal of 18442254 is 45224481.

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

18442254 is an admirable number.

It is a congruent number.

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, 1536849 + ... + 1536860.

It is an arithmetic number, because the mean of its divisors is an integer number (4610565).

Almost surely, 2^18442254 is an apocalyptic number.

18442254 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18442254 is a wasteful number, since it uses less digits than its factorization.

18442254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073714.

The product of its digits is 10240, while the sum is 30.

The square root of 18442254 is about 4294.4445508121. Note that the first 3 decimals coincide. The cubic root of 18442254 is about 264.2031551508.

The spelling of 18442254 in words is "eighteen million, four hundred forty-two thousand, two hundred fifty-four".