20789541 has 10 divisors (see below), whose sum is σ = 31056102. Its totient is φ = 13859640.

The previous prime is 20789507. The next prime is 20789551. The reversal of 20789541 is 14598702.

It can be written as a sum of positive squares in only one way, i.e., 20738916 + 50625 = 4554^2 + 225^2 .

It is not a de Polignac number, because 20789541 - 2⁷ = 20789413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20789496 and 20789505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20789551) 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 in 9 ways as a sum of consecutive naturals, for example, 128250 + ... + 128411.

Almost surely, 2^20789541 is an apocalyptic number.

It is an amenable number.

20789541 is a deficient number, since it is larger than the sum of its proper divisors (10266561).

20789541 is an equidigital number, since it uses as much as digits as its factorization.

20789541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256673 (or 256664 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 20789541 is about 4559.5549124887. The cubic root of 20789541 is about 274.9676700285.

It can be divided in two parts, 207895 and 41, that added together give a square (207936 = 456²).

The spelling of 20789541 in words is "twenty million, seven hundred eighty-nine thousand, five hundred forty-one".