20173116 has 24 divisors (see below), whose sum is σ = 49117824. Its totient is φ = 6431920.

The previous prime is 20173091. The next prime is 20173133. The reversal of 20173116 is 61137102.

It is a junction number, because it is equal to n+sod(n) for n = 20173092 and 20173101.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36270 + ... + 36821.

It is an arithmetic number, because the mean of its divisors is an integer number (2046576).

Almost surely, 2^20173116 is an apocalyptic number.

It is an amenable number.

20173116 is an abundant number, since it is smaller than the sum of its proper divisors (28944708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20173116 is a wasteful number, since it uses less digits than its factorization.

20173116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73121 (or 73119 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 20173116 is about 4491.4492093310. The cubic root of 20173116 is about 272.2226946418. Note that the first 3 decimals are identical.

The spelling of 20173116 in words is "twenty million, one hundred seventy-three thousand, one hundred sixteen".