20169347 has 8 divisors (see below), whose sum is σ = 22057920. Its totient is φ = 18289960.

The previous prime is 20169323. The next prime is 20169349. The reversal of 20169347 is 74396102.

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 20169347 - 2¹⁴ = 20152963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20169349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804 + ... + 6942.

It is an arithmetic number, because the mean of its divisors is an integer number (2757240).

Almost surely, 2^20169347 is an apocalyptic number.

20169347 is a deficient number, since it is larger than the sum of its proper divisors (1888573).

20169347 is a wasteful number, since it uses less digits than its factorization.

20169347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4593.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20169347 is about 4491.0296146875. The cubic root of 20169347 is about 272.2057402087.

The spelling of 20169347 in words is "twenty million, one hundred sixty-nine thousand, three hundred forty-seven".