20202418 has 8 divisors (see below), whose sum is σ = 31621248. Its totient is φ = 9662004.

The previous prime is 20202379. The next prime is 20202419. The reversal of 20202418 is 81420202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20202395 and 20202404.

It is not an unprimeable number, because it can be changed into a prime (20202419) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 219546 + ... + 219637.

It is an arithmetic number, because the mean of its divisors is an integer number (3952656).

Almost surely, 2^20202418 is an apocalyptic number.

20202418 is a deficient number, since it is larger than the sum of its proper divisors (11418830).

20202418 is a wasteful number, since it uses less digits than its factorization.

20202418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439208.

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

The square root of 20202418 is about 4494.7100017687. The cubic root of 20202418 is about 272.3544345013.

The spelling of 20202418 in words is "twenty million, two hundred two thousand, four hundred eighteen".