20020782 has 8 divisors (see below), whose sum is σ = 40041576. Its totient is φ = 6673592.

The previous prime is 20020753. The next prime is 20020799. The reversal of 20020782 is 28702002.

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

20020782 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668393 + ... + 1668404.

It is an arithmetic number, because the mean of its divisors is an integer number (5005197).

Almost surely, 2^20020782 is an apocalyptic number.

20020782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20020782 is a wasteful number, since it uses less digits than its factorization.

20020782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336802.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20020782 is about 4474.4588499616. The cubic root of 20020782 is about 271.5357474916.

Adding to 20020782 its reverse (28702002), we get a palindrome (48722784).

It can be divided in two parts, 20020 and 782, that added together give a palindrome (20802).

The spelling of 20020782 in words is "twenty million, twenty thousand, seven hundred eighty-two".