20020046 has 4 divisors (see below), whose sum is σ = 30030072. Its totient is φ = 10010022.

The previous prime is 20020027. The next prime is 20020093. The reversal of 20020046 is 64002002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64002002 = 2 ⋅32001001.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20020046.

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, 5005010 + ... + 5005013.

It is an arithmetic number, because the mean of its divisors is an integer number (7507518).

Almost surely, 2^20020046 is an apocalyptic number.

20020046 is a deficient number, since it is larger than the sum of its proper divisors (10010026).

20020046 is a wasteful number, since it uses less digits than its factorization.

20020046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010025.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20020046 is about 4474.3766046233. The cubic root of 20020046 is about 271.5324200698.

Adding to 20020046 its reverse (64002002), we get a palindrome (84022048).

The spelling of 20020046 in words is "twenty million, twenty thousand, forty-six".