20161073 has 8 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 19642000.

The previous prime is 20161027. The next prime is 20161079. The reversal of 20161073 is 37016102.

It is a happy number.

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 20161073 - 2⁸ = 20160817 is a prime.

It is a super-2 number, since 2×20161073² = 812937729022658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20161079) 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, 10943 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^20161073 is an apocalyptic number.

It is an amenable number.

20161073 is a deficient number, since it is larger than the sum of its proper divisors (523087).

20161073 is a wasteful number, since it uses less digits than its factorization.

20161073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 20161073 is about 4490.1083505858. The cubic root of 20161073 is about 272.1685131178.

Adding to 20161073 its reverse (37016102), we get a palindrome (57177175).

The spelling of 20161073 in words is "twenty million, one hundred sixty-one thousand, seventy-three".