20790356 has 12 divisors (see below), whose sum is σ = 37157568. Its totient is φ = 10173912.

The previous prime is 20790349. The next prime is 20790383. The reversal of 20790356 is 65309702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55106 + ... + 55481.

It is an arithmetic number, because the mean of its divisors is an integer number (3096464).

Almost surely, 2^20790356 is an apocalyptic number.

It is an amenable number.

20790356 is a deficient number, since it is larger than the sum of its proper divisors (16367212).

20790356 is a wasteful number, since it uses less digits than its factorization.

20790356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110638 (or 110636 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 20790356 is about 4559.6442843713. The cubic root of 20790356 is about 274.9712631129.

The spelling of 20790356 in words is "twenty million, seven hundred ninety thousand, three hundred fifty-six".