18040766 has 8 divisors (see below), whose sum is σ = 28485480. Its totient is φ = 8545608.

The previous prime is 18040753. The next prime is 18040769. The reversal of 18040766 is 66704081.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18040769) 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, 237341 + ... + 237416.

It is an arithmetic number, because the mean of its divisors is an integer number (3560685).

Almost surely, 2^18040766 is an apocalyptic number.

18040766 is a deficient number, since it is larger than the sum of its proper divisors (10444714).

18040766 is a wasteful number, since it uses less digits than its factorization.

18040766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474778.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18040766 is about 4247.4422891900. The cubic root of 18040766 is about 262.2718368114.

The spelling of 18040766 in words is "eighteen million, forty thousand, seven hundred sixty-six".