20224018 has 16 divisors (see below), whose sum is σ = 32677920. Its totient is φ = 9356256.

The previous prime is 20224013. The next prime is 20224031. The reversal of 20224018 is 81042202.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 20223986 and 20224004.

It is not an unprimeable number, because it can be changed into a prime (20224013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4555 + ... + 7822.

It is an arithmetic number, because the mean of its divisors is an integer number (2042370).

Almost surely, 2^20224018 is an apocalyptic number.

20224018 is a deficient number, since it is larger than the sum of its proper divisors (12453902).

20224018 is a wasteful number, since it uses less digits than its factorization.

20224018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12441.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 20224018 is about 4497.1121845024. The cubic root of 20224018 is about 272.4514651377.

The spelling of 20224018 in words is "twenty million, two hundred twenty-four thousand, eighteen".