20018034 has 12 divisors (see below), whose sum is σ = 43372446. Its totient is φ = 6672672.

The previous prime is 20018021. The next prime is 20018069. The reversal of 20018034 is 43081002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14040009 + 5978025 = 3747^2 + 2445^2 .

It is a Smith number, since the sum of its digits (18) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1112113 = 20018034 / (2 + 0 + 0 + 1 + 8 + 0 + 3 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 20017998 and 20018016.

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 5 ways as a sum of consecutive naturals, for example, 556039 + ... + 556074.

Almost surely, 2^20018034 is an apocalyptic number.

20018034 is an abundant number, since it is smaller than the sum of its proper divisors (23354412).

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

20018034 is a wasteful number, since it uses less digits than its factorization.

20018034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112121 (or 1112118 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20018034 is about 4474.1517631837. The cubic root of 20018034 is about 271.5233234951.

Adding to 20018034 its reverse (43081002), we get a palindrome (63099036).

The spelling of 20018034 in words is "twenty million, eighteen thousand, thirty-four".