20020318 has 4 divisors (see below), whose sum is σ = 30030480. Its totient is φ = 10010158.

The previous prime is 20020307. The next prime is 20020331. The reversal of 20020318 is 81302002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81302002 = 2 ⋅40651001.

It is a super-2 number, since 2×20020318² = 801626265642248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005078 + ... + 5005081.

It is an arithmetic number, because the mean of its divisors is an integer number (7507620).

Almost surely, 2^20020318 is an apocalyptic number.

20020318 is a deficient number, since it is larger than the sum of its proper divisors (10010162).

20020318 is a wasteful number, since it uses less digits than its factorization.

20020318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010161.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20020318 is about 4474.4069998157. The cubic root of 20020318 is about 271.5336497787.

The spelling of 20020318 in words is "twenty million, twenty thousand, three hundred eighteen".