20416018 has 16 divisors (see below), whose sum is σ = 35086464. Its totient is φ = 8727840.

The previous prime is 20415961. The next prime is 20416021. The reversal of 20416018 is 81061402.

It is a self number, because there is not a number n which added to its sum of digits gives 20416018.

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, 4803 + ... + 7993.

It is an arithmetic number, because the mean of its divisors is an integer number (2192904).

Almost surely, 2^20416018 is an apocalyptic number.

20416018 is a deficient number, since it is larger than the sum of its proper divisors (14670446).

20416018 is a wasteful number, since it uses less digits than its factorization.

20416018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3657.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 20416018 is about 4518.4087907138. The cubic root of 20416018 is about 273.3109384124.

The spelling of 20416018 in words is "twenty million, four hundred sixteen thousand, eighteen".