18074436 has 12 divisors (see below), whose sum is σ = 42173712. Its totient is φ = 6024808.

The previous prime is 18074411. The next prime is 18074437. The reversal of 18074436 is 63447081.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 18074397 and 18074406.

It is not an unprimeable number, because it can be changed into a prime (18074437) by changing a digit.

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, 753090 + ... + 753113.

It is an arithmetic number, because the mean of its divisors is an integer number (3514476).

Almost surely, 2^18074436 is an apocalyptic number.

It is an amenable number.

18074436 is an abundant number, since it is smaller than the sum of its proper divisors (24099276).

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

18074436 is a wasteful number, since it uses less digits than its factorization.

18074436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506210 (or 1506208 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 18074436 is about 4251.4040033852. The cubic root of 18074436 is about 262.4348972338.

The spelling of 18074436 in words is "eighteen million, seventy-four thousand, four hundred thirty-six".