20412018 has 24 divisors (see below), whose sum is σ = 48247056. Its totient is φ = 6185400.

The previous prime is 20411983. The next prime is 20412037. The reversal of 20412018 is 81021402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51348 + ... + 51743.

It is an arithmetic number, because the mean of its divisors is an integer number (2010294).

Almost surely, 2^20412018 is an apocalyptic number.

20412018 is an abundant number, since it is smaller than the sum of its proper divisors (27835038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20412018 is a wasteful number, since it uses less digits than its factorization.

20412018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103110 (or 103107 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 20412018 is about 4517.9661353313. The cubic root of 20412018 is about 273.2930878018.

The spelling of 20412018 in words is "twenty million, four hundred twelve thousand, eighteen".