20020446 has 20 divisors (see below), whose sum is σ = 44860992. Its totient is φ = 6673428.

The previous prime is 20020439. The next prime is 20020447. The reversal of 20020446 is 64402002.

20020446 is a `hidden beast` number, since 200 + 20 + 446 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020447) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61630 + ... + 61953.

Almost surely, 2^20020446 is an apocalyptic number.

20020446 is an abundant number, since it is smaller than the sum of its proper divisors (24840546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20020446 is a wasteful number, since it uses less digits than its factorization.

20020446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123597 (or 123588 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20020446 is about 4474.4213033643. The cubic root of 20020446 is about 271.5342284614.

Adding to 20020446 its reverse (64402002), we get a palindrome (84422448).

The spelling of 20020446 in words is "twenty million, twenty thousand, four hundred forty-six".