20789371 has 2 divisors, whose sum is σ = 20789372. Its totient is φ = 20789370.

The previous prime is 20789359. The next prime is 20789393. The reversal of 20789371 is 17398702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20789371 - 2¹¹ = 20787323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20789371.

It is not a weakly prime, because it can be changed into another prime (20789311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10394685 + 10394686.

It is an arithmetic number, because the mean of its divisors is an integer number (10394686).

Almost surely, 2^20789371 is an apocalyptic number.

20789371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20789371 is an equidigital number, since it uses as much as digits as its factorization.

20789371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 20789371 is about 4559.5362702801. The cubic root of 20789371 is about 274.9669205390.

It can be divided in two parts, 2078 and 9371, that added together give a square (11449 = 107²).

The spelling of 20789371 in words is "twenty million, seven hundred eighty-nine thousand, three hundred seventy-one".