20208039 has 16 divisors (see below), whose sum is σ = 29057280. Its totient is φ = 12450240.

The previous prime is 20208029. The next prime is 20208043. The reversal of 20208039 is 93080202.

It is not a de Polignac number, because 20208039 - 2¹³ = 20199847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20208029) 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 15 ways as a sum of consecutive naturals, for example, 1987 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (1816080).

Almost surely, 2^20208039 is an apocalyptic number.

20208039 is a deficient number, since it is larger than the sum of its proper divisors (8849241).

20208039 is a wasteful number, since it uses less digits than its factorization.

20208039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8710.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20208039 is about 4495.3352488997. The cubic root of 20208039 is about 272.3796915822.

Adding to 20208039 its product of nonzero digits (864), we get a triangular number (20208903 = T₆₃₅₇).

The spelling of 20208039 in words is "twenty million, two hundred eight thousand, thirty-nine".