20350939 has 8 divisors (see below), whose sum is σ = 23429088. Its totient is φ = 17315520.

The previous prime is 20350933. The next prime is 20350949. The reversal of 20350939 is 93905302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20350939 - 2³ = 20350931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20350939.

It is not an unprimeable number, because it can be changed into a prime (20350931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9652 + ... + 11569.

It is an arithmetic number, because the mean of its divisors is an integer number (2928636).

Almost surely, 2^20350939 is an apocalyptic number.

20350939 is a deficient number, since it is larger than the sum of its proper divisors (3078149).

20350939 is a wasteful number, since it uses less digits than its factorization.

20350939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21365.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 20350939 is about 4511.2015029258. The cubic root of 20350939 is about 273.0202232913.

The spelling of 20350939 in words is "twenty million, three hundred fifty thousand, nine hundred thirty-nine".