20486018 has 16 divisors (see below), whose sum is σ = 35836800. Its totient is φ = 8779428.

The previous prime is 20485999. The next prime is 20486023. The reversal of 20486018 is 81068402.

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, 14246 + ... + 15617.

It is an arithmetic number, because the mean of its divisors is an integer number (2239800).

Almost surely, 2^20486018 is an apocalyptic number.

20486018 is a deficient number, since it is larger than the sum of its proper divisors (15350782).

20486018 is an equidigital number, since it uses as much as digits as its factorization.

20486018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29886 (or 29872 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 20486018 is about 4526.1482521013. The cubic root of 20486018 is about 273.6229473731.

The spelling of 20486018 in words is "twenty million, four hundred eighty-six thousand, eighteen".