20173134 has 16 divisors (see below), whose sum is σ = 40746960. Its totient is φ = 6657600.

The previous prime is 20173133. The next prime is 20173141. The reversal of 20173134 is 43137102.

It is a self number, because there is not a number n which added to its sum of digits gives 20173134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20173133) 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 7 ways as a sum of consecutive naturals, for example, 16039 + ... + 17250.

It is an arithmetic number, because the mean of its divisors is an integer number (2546685).

Almost surely, 2^20173134 is an apocalyptic number.

20173134 is an abundant number, since it is smaller than the sum of its proper divisors (20573826).

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

20173134 is a wasteful number, since it uses less digits than its factorization.

20173134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33395.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 20173134 is about 4491.4512131381. The cubic root of 20173134 is about 272.2227756078. Note that the first 3 decimals are identical.

It can be divided in two parts, 2017 and 3134, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 20173134 in words is "twenty million, one hundred seventy-three thousand, one hundred thirty-four".