20424118 has 16 divisors (see below), whose sum is σ = 35992656. Its totient is φ = 8569440.

The previous prime is 20424113. The next prime is 20424137. The reversal of 20424118 is 81142402.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424113) 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, 35421 + ... + 35992.

It is an arithmetic number, because the mean of its divisors is an integer number (2249541).

Almost surely, 2^20424118 is an apocalyptic number.

20424118 is a deficient number, since it is larger than the sum of its proper divisors (15568538).

20424118 is a wasteful number, since it uses less digits than its factorization.

20424118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71439.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 20424118 is about 4519.3050350690. The cubic root of 20424118 is about 273.3470787588.

The spelling of 20424118 in words is "twenty million, four hundred twenty-four thousand, one hundred eighteen".