20785796 has 6 divisors (see below), whose sum is σ = 36375150. Its totient is φ = 10392896.

The previous prime is 20785763. The next prime is 20785819. The reversal of 20785796 is 69758702.

It can be written as a sum of positive squares in only one way, i.e., 20376196 + 409600 = 4514^2 + 640^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2598221 + ... + 2598228.

It is an arithmetic number, because the mean of its divisors is an integer number (6062525).

Almost surely, 2^20785796 is an apocalyptic number.

It is an amenable number.

20785796 is a deficient number, since it is larger than the sum of its proper divisors (15589354).

20785796 is a wasteful number, since it uses less digits than its factorization.

20785796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196453 (or 5196451 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 20785796 is about 4559.1442179427. The cubic root of 20785796 is about 274.9511582681.

The spelling of 20785796 in words is "twenty million, seven hundred eighty-five thousand, seven hundred ninety-six".