20794772 has 6 divisors (see below), whose sum is σ = 36390858. Its totient is φ = 10397384.

The previous prime is 20794771. The next prime is 20794847. The reversal of 20794772 is 27749702.

It can be written as a sum of positive squares in only one way, i.e., 20757136 + 37636 = 4556^2 + 194^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20794771) 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, 2599343 + ... + 2599350.

It is an arithmetic number, because the mean of its divisors is an integer number (6065143).

Almost surely, 2^20794772 is an apocalyptic number.

It is an amenable number.

20794772 is a deficient number, since it is larger than the sum of its proper divisors (15596086).

20794772 is a wasteful number, since it uses less digits than its factorization.

20794772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5198697 (or 5198695 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 20794772 is about 4560.1285069612. The cubic root of 20794772 is about 274.9907302661.

The spelling of 20794772 in words is "twenty million, seven hundred ninety-four thousand, seven hundred seventy-two".