20366818 has 8 divisors (see below), whose sum is σ = 30639312. Its totient is φ = 10153716.

The previous prime is 20366809. The next prime is 20366851. The reversal of 20366818 is 81866302.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13980 + ... + 15367.

It is an arithmetic number, because the mean of its divisors is an integer number (3829914).

Almost surely, 2^20366818 is an apocalyptic number.

20366818 is a deficient number, since it is larger than the sum of its proper divisors (10272494).

20366818 is a wasteful number, since it uses less digits than its factorization.

20366818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29696.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 20366818 is about 4512.9611121746. The cubic root of 20366818 is about 273.0912136449.

The spelling of 20366818 in words is "twenty million, three hundred sixty-six thousand, eight hundred eighteen".