18000562 has 16 divisors (see below), whose sum is σ = 28504800. Its totient is φ = 8501760.

The previous prime is 18000547. The next prime is 18000571. The reversal of 18000562 is 26500081.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 23989 + ... + 24727.

It is an arithmetic number, because the mean of its divisors is an integer number (1781550).

Almost surely, 2^18000562 is an apocalyptic number.

18000562 is a deficient number, since it is larger than the sum of its proper divisors (10504238).

18000562 is a wasteful number, since it uses less digits than its factorization.

18000562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 18000562 is about 4242.7069189375. The cubic root of 18000562 is about 262.0768669048.

The spelling of 18000562 in words is "eighteen million, five hundred sixty-two", and thus it is an aban number.