18056434 has 8 divisors (see below), whose sum is σ = 29546928. Its totient is φ = 8207460.

The previous prime is 18056417. The next prime is 18056461. The reversal of 18056434 is 43465081.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 18056396 and 18056405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410352 + ... + 410395.

It is an arithmetic number, because the mean of its divisors is an integer number (3693366).

Almost surely, 2^18056434 is an apocalyptic number.

18056434 is a deficient number, since it is larger than the sum of its proper divisors (11490494).

18056434 is a wasteful number, since it uses less digits than its factorization.

18056434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820760.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 18056434 is about 4249.2862930144. The cubic root of 18056434 is about 262.3477405749.

The spelling of 18056434 in words is "eighteen million, fifty-six thousand, four hundred thirty-four".