20795798 has 4 divisors (see below), whose sum is σ = 31193700. Its totient is φ = 10397898.

The previous prime is 20795791. The next prime is 20795807. The reversal of 20795798 is 89759702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89759702 = 2 ⋅44879851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20795791) by changing a digit.

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 as a sum of consecutive naturals, namely, 5198948 + ... + 5198951.

It is an arithmetic number, because the mean of its divisors is an integer number (7798425).

Almost surely, 2^20795798 is an apocalyptic number.

20795798 is a deficient number, since it is larger than the sum of its proper divisors (10397902).

20795798 is a wasteful number, since it uses less digits than its factorization.

20795798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10397901.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 20795798 is about 4560.2410024033. The cubic root of 20795798 is about 274.9952528106.

The spelling of 20795798 in words is "twenty million, seven hundred ninety-five thousand, seven hundred ninety-eight".